# Assistant conversation G4JWL2

- Canonical URL: <https://m.sheaf.less.rest/G4JWL2>
- Resource IRI: <https://m.sheaf.less.rest/G4JWL2>
- Type: assistant conversation
- Mode: quick

## Transcript

### 1. User

Import the attached PDF documents.

[Uploaded PDFs]
- Carving_Up_Reality.pdf: Sheaf file #727M5H
- Environmental_Metaphysics.pdf: Sheaf file #F6QAG9
- Boundaries_An_Essay_in_Mereotopology.pdf: Sheaf file #KZLTKG
- Do_Mountains_Exist.pdf: Sheaf file #SZYPPA
- A_Theory_of_Granular_Partitions.pdf: Sheaf file #RBRZSS
- Capabilities_An_Ontology.pdf: Sheaf file #RU8TRT
- About_the_Unreal.pdf: Sheaf file #YAFKTX
- Diagrams_Documents_and_the_Meshing_of_Plans.pdf: Sheaf file #4JNVT3

### 2. Assistant tool calls

#### Tool call: `list_documents`

```json
{}
```

### 3. Assistant tool calls

#### Tool call: `document_import`

```json
{
  "action": "stage",
  "file_ids": [
    "727M5H",
    "F6QAG9",
    "KZLTKG",
    "SZYPPA",
    "RBRZSS",
    "RU8TRT",
    "YAFKTX",
    "4JNVT3"
  ],
  "name": "Import eight attached ontology and metaphysics PDFs"
}
```

### 4. Tool result: document_import

{
  "status": {
    "files": [
      {
        "error": null,
        "status": "pending",
        "file_id": "4JNVT3",
        "execution_id": null
      },
      {
        "error": null,
        "status": "pending",
        "file_id": "727M5H",
        "execution_id": null
      },
      {
        "error": null,
        "status": "pending",
        "file_id": "F6QAG9",
        "execution_id": null
      },
      {
        "error": null,
        "status": "pending",
        "file_id": "KZLTKG",
        "execution_id": null
      },
      {
        "error": null,
        "status": "pending",
        "file_id": "RBRZSS",
        "execution_id": null
      },
      {
        "error": null,
        "status": "pending",
        "file_id": "RU8TRT",
        "execution_id": null
      },
      {
        "error": null,
        "status": "pending",
        "file_id": "SZYPPA",
        "execution_id": null
      },
      {
        "error": null,
        "status": "pending",
        "file_id": "YAFKTX",
        "execution_id": null
      }
    ],
    "counts": {
      "pending": 8
    }
  },
  "sources": [],
  "action": "stage",
  "run_iri": "https://m.sheaf.less.rest/VGCZDU",
  "run_id": "VGCZDU",
  "file_ids": [
    "727M5H",
    "F6QAG9",
    "KZLTKG",
    "SZYPPA",
    "RBRZSS",
    "RU8TRT",
    "YAFKTX",
    "4JNVT3"
  ]
}

### 5. Tool result: list_documents

FOLDERS
- Living Structure, Wholeness & Beauty
- Procedural Generation & Co-Creation
- Roads, Trails & Movement
- Terrain, Hydrology & Erosion
- Water Simulation & Rendering

Living Structure, Wholeness & Beauty (8)
- #MH5J8D Beautimeter: Harnessing GPT for Assessing Architectural and Urban Beauty Based on the 15 Properties of Living Structure - 2025 | Bin Jiang | AI | 12 pp. | doi:10.3390/ai6040074
  Micro abstract: Presents Beautimeter, a GPT-based tool that scores buildings and urban scenes against Christopher Alexander’s 15 properties of living structure to assess their coherence and beauty.
- #XW22YY Generative Codes: The Path to Building Welcoming, Beautiful, Sustainable Neighborhoods - 2005 | Brian Hanson, Christopher Alexander, Maggie Moore Alexander, Michael Mehaffy, Randall Schmidt | Center for Environmental Structure | 21 pp.
  Micro abstract: Argues that living neighborhoods arise from generative codes: ordered, participatory steps that let buildings and public spaces unfold from local people, land, and context.
- #SKRF4C Geography as a Science of the Earth’s Surface Founded on the Third View of Space - 2022 | Bin Jiang | Annals of GIS | 14 pp. | doi:10.1080/19475683.2021.1966502
  Micro abstract: Recasts geography around an organismic view of space, using scaling and spatial dependence to understand—and deliberately create—places with greater living structure.
- #PXG56P Harmony-Seeking Computations: A Science of Non-Classical Dynamics Based on the Progressive Evolution of the Larger Whole - 2009 | Christopher Alexander | Unpublished manuscript | 66 pp.
  Micro abstract: Proposes harmony-seeking computation as a creative process that repeatedly strengthens latent centers in a configuration while preserving and deepening the larger whole.
- #MJKTBB Living Images: A Recursive Approach to Computing the Structural Beauty of Images or the Livingness of Space - 2023 | Bin Jiang, Chris de Rijke | Annals of the American Association of Geographers | 19 pp. | doi:10.1080/24694452.2023.2178376
  Micro abstract: Measures an image’s structural beauty by recursively extracting its nested substructures, revealing a compact hierarchy that also captures visual saliency.
- #3XSLTA Structural Beauty: A Structure-Based Computational Approach to Quantifying the Beauty of an Image - 2021 | Bin Jiang, Chris de Rijke | Journal of Imaging | 15 pp. | doi:10.3390/jimaging7050078
  Micro abstract: Proposes a quantitative measure of structural beauty based on how many substructures an image contains and how strongly they form a hierarchy across scales.
- #ZU8GZV Structure-Preserving Transformations - 2002 | Christopher Alexander | The Nature of Order, Book Two: The Process of Creating Life | 4 pp. | doi:10.2307/j.ctv27ftw6c.5
  Micro abstract: Explains structure-preserving transformations: incremental changes that extend the centers and relationships already present in a place rather than weakening its wholeness.
- #BYG3BQ Wholeness as a Hierarchical Graph to Capture the Nature of Space - 2015 | Bin Jiang | International Journal of Geographical Information Science | 14 pp. | doi:10.1080/13658816.2015.1038542
  Micro abstract: Models spatial wholeness as a hierarchical graph of mutually reinforcing centers, using PageRank and scaling depth to quantify the life of parts and wholes.

Procedural Generation & Co-Creation (6)
- #4TH488 Explainable AI for Designers: A Human-Centered Perspective on Mixed-Initiative Co-Creation - 2018 | Antonios Liapis, G. Michael Youngblood, Jichen Zhu, Rafael Bidarra, Sebastian Risi | 2018 IEEE Conference on Computational Intelligence and Games (CIG) | 8 pp. | doi:10.1109/CIG.2018.8490433
  Micro abstract: Defines explainable AI for game designers, mapping co-creative systems by their explainability, initiative, and domain overlap so explanations serve concrete design tasks.
- #9NQ94D Extracting Physics from Blended Platformer Game Levels - 2020 | Adam Summerville, Anurag Sarkar, Joseph C. Osborn, Sam Snodgrass | Joint Proceedings of the AIIDE 2020 Workshops (CEUR Workshop Proceedings, Vol. 2862) | 7 pp.
  Micro abstract: Infers playable jump physics from generated platformer levels, including hybrid physics models for levels that blend the geometry and style of multiple games.
- #7GR3AQ Procedural Content Generation through Quality Diversity - 2019 | Ahmed Khalifa, Antonios Liapis, Daniele Gravina, Georgios N. Yannakakis, Julian Togelius | 2019 IEEE Conference on Games (CoG) | 8 pp. | doi:10.1109/CIG.2019.8848053
  Micro abstract: Argues for quality-diversity algorithms in procedural generation, producing broad collections of varied, playable content while exposing the design space for exploration and co-creation.
- #CQBDX4 Procedural Content Generation via Machine Learning (PCGML) - 2018 | Aaron Isaksen, Adam Summerville, Amy K. Hoover, Andy Nealen, Christoffer Holmgård, Julian Togelius, Matthew Guzdial, Sam Snodgrass | IEEE Transactions on Games | 15 pp. | doi:10.1109/TG.2018.2846639
  Micro abstract: Defines and surveys PCGML: generating functional game content directly from models trained on existing examples, with uses spanning creation, completion, repair, critique, and compression.
- #WZ8DHP Runtime Evaluation of Procedural Content Generation in an Endless Runner Game Using Autonomous Agents - 2026 | Rishabh Kar | arXiv | 25 pp. | doi:10.48550/arXiv.2605.01783
  Micro abstract: Integrates procedural generation and validation in an endless runner, using aerial and ground agents to detect blocked or unnavigable content before the player reaches it.
- #NRBMD5 Towards Friendly Mixed Initiative Procedural Content Generation: Three Pillars of Industry - 2020 | Frederic Fol Leymarie, Gorm Lai, William Latham | Proceedings of the International Conference on the Foundations of Digital Games (FDG '20) | 4 pp. | doi:10.1145/3402942.3402946
  Micro abstract: Distills three requirements for industry-friendly co-creative PCG tools: preserve designer control, keep feedback loops short, and fit into existing production pipelines.

Roads, Trails & Movement (7)
- #G3TBNG A Sequential Two-Step Algorithm for Fast Generation of Vehicle Racing Trajectories - 2016 | J. Christian Gerdes, John Subosits, Nitin R. Kapania | Journal of Dynamic Systems, Measurement, and Control | 12 pp. | doi:10.1115/1.4033311
  Micro abstract: Generates near-optimal racing trajectories quickly by alternating between a minimum-time speed profile and a convex path update that reduces curvature.
- #B6P8L4 Active walker model for the formation of human and animal trail systems - 1997 | Dirk Helbing, Frank Schweitzer, Joachim Keltsch, Péter Molnár | Physical Review E | 34 pp. | doi:10.1103/physreve.56.2527
  Micro abstract: Models trail systems as self-organization: walkers reinforce attractive routes while unused traces fade, producing dendritic ant trails and low-detour pedestrian networks.
- #V4TQYB Interactive procedural street modeling - 2008 | Eugene Zhang, Gregory Esch, Guoning Chen, Pascal Müller, Peter Wonka | ACM Transactions on Graphics | 10 pp. | doi:10.1145/1360612.1360702
  Micro abstract: Lets designers generate and edit large street networks through tensor fields, combining procedural speed with brush-like global and local control over street patterns.
- #UYLTYJ Modelling the Evolution of Human Trail Systems - 1997 | Dirk Helbing, Joachim Keltsch, Péter Molnár | Nature | 11 pp. | doi:10.1038/40353
  Micro abstract: Shows how pedestrian trails emerge through feedback between destination-seeking walkers, existing paths, and vegetation recovery, yielding a compromise between directness and shared infrastructure.
- #GY93FG Mountain Trail Formation and the Active Walker Model - 2009 | J. P. Hague, S. J. Gilks | International Journal of Modern Physics C | 22 pp. | doi:10.1142/S0129183109014059
  Micro abstract: Extends the active-walker model to steep terrain, explaining zigzag mountain trails through slope avoidance, directional persistence, and mutual reinforcement by ascending and descending walkers.
- #LXV9AT Principles of Trail Layout and Design - 2019 | California State Parks | California State Parks Trails Handbook | 64 pp.
  Micro abstract: A field-oriented guide to durable trail design, emphasizing curvilinear alignment, natural drainage, sustainable grades, control points, and close reading of landform and soils.
- #XDEFZS Procedural Generation of Roads - 2010 | A. Peytavie, E. Galin, E. Guérin, N. Maréchal | Computer Graphics Forum | 10 pp. | doi:10.1111/j.1467-8659.2009.01612.x
  Micro abstract: Automatically routes and constructs roads with an anisotropic shortest-path method that weighs slope and obstacles while treating surface segments, bridges, and tunnels consistently.

Terrain, Hydrology & Erosion (6)
- #NV2YRW FastFlow: GPU Acceleration of Flow and Depression Routing for Landscape Simulation - 2024 | Aryamaan Jain, Bernhard Kerbl, Brandon Finley, Guillaume Cordonnier, James Gain | Computer Graphics Forum | 13 pp. | doi:10.1111/cgf.15243
  Micro abstract: A GPU framework for routing surface flow through terrain and its depressions fast enough to make erosion, river, lake, and ecosystem simulations interactive.
- #96ZMGK Large Scale Terrain Generation from Tectonic Uplift and Fluvial Erosion - 2016 | Adrien Peytavie, Bedrich Benes, Guillaume Cordonnier, Jean Braun, Marie-Paule Cani, Éric Galin, Éric Guérin | Computer Graphics Forum | 11 pp. | doi:10.1111/cgf.12820
  Micro abstract: Generates large, controllable mountain terrains by coupling user-painted tectonic uplift with fluvial erosion, then turning the resulting stream graph into detailed landforms.
- #DWXKYQ Physically-based analytical erosion for fast terrain generation - 2024 | Boris Gailleton, Guillaume Cordonnier, Petros Tzathas, Philippe Steer | Computer Graphics Forum | 14 pp. | doi:10.1111/cgf.15033
  Micro abstract: Turns the stream power law into an interactive terrain tool, replacing thousands of erosion time steps with analytical solutions and a direct control for landscape age.
- #MTDKDE Priority-Flood: An Optimal Depression-Filling and Watershed-Labeling Algorithm for Digital Elevation Models - 2014 | Clarence Lehman, David Mulla, Richard Barnes | Computers & Geosciences | 17 pp. | doi:10.1016/j.cageo.2013.04.024
  Micro abstract: Introduces Priority-Flood, a simple, optimal algorithm that removes drainage-blocking depressions from elevation models and can also derive watersheds and flow directions.
- #AK7NGE Procedural Riverscapes - 2019 | A. Peytavie, B. Benes, E. Galin, E. Guérin, J. Gain, T. Dupont, Y. Cortial | Computer Graphics Forum | 12 pp. | doi:10.1111/cgf.13814
  Micro abstract: Builds editable, animated riverscapes from bare terrain by carving hydrologically plausible channels and blending real-time procedural water primitives instead of simulating fluids.
- #DMTA8Y Terrain Generation Using Procedural Models Based on Hydrology - 2013 | Adrien Peytavie, Bedřich Beneš, Jean-David Génevaux, Éric Galin, Éric Guérin | ACM Transactions on Graphics | 10 pp. | doi:10.1145/2461912.2461996
  Micro abstract: Generates controllable, multiscale terrain from a sketched drainage network, representing rivers and landforms as an editable hierarchy of continuous procedural primitives.

Water Simulation & Rendering (12)
- #RBS5K6 A Layered Particle-Based Fluid Model for Real-Time Rendering of Water - 2010 | Daniel Scherzer, Florian Bagar, Michael Wimmer | Computer Graphics Forum | 7 pp. | doi:10.1111/j.1467-8659.2010.01734.x
  Micro abstract: Renders particle-based water and volumetric foam in real time using perspective-aware surface smoothing, physically guided foam formation, and layered depth compositing.
- #C4AY2M A Survey of Ocean Simulation and Rendering Techniques in Computer Graphics - 2011 | B. Crespin, D. Ghazanfarpour, E. Darles, J.-C. Gonzato | Computer Graphics Forum | 17 pp. | doi:10.1111/j.1467-8659.2010.01828.x
  Micro abstract: Surveys ocean graphics from spectral deep-water models to near-shore fluid simulation, then covers the foam, spray, and light transport needed for convincing rendering.
- #WZMZGY Advected river textures - 2009 | Dirk Arnold, Stephen Brooks, Tim Burrell | Computer Animation and Virtual Worlds | 11 pp. | doi:10.1002/cav.288
  Micro abstract: Combines a 2D Navier–Stokes solver, hydrostatic pressure columns, and advected procedural textures to render detailed, terrain-responsive rivers at real-time frame rates.
- #92XRH7 Lagrangian Texture Advection: Preserving both Spectrum and Velocity Field - 2011 |  Qizhi Yu, E. Bruneton, F. Neyret, N. Holzschuch | IEEE Transactions on Visualization and Computer Graphics | 13 pp. | doi:10.1109/tvcg.2010.263
  Micro abstract: Advects fluid textures with deformable particle grids, preserving both the input texture’s visual spectrum and exact motion along the velocity field without cumulative stretching.
- #8SERGP Real-time Breaking Waves for Shallow Water Simulations - 2007 | Markus Gross, Matthias Müller-Fischer, Nils Thürey, Simon Schirm | 15th Pacific Conference on Computer Graphics and Applications (Pacific Graphics 2007) | 8 pp. | doi:10.1109/PG.2007.33
  Micro abstract: Adds real-time overturning waves to shallow-water heightfields by detecting steep fronts and spawning connected particle sheets that collapse into splashes and foam.
- #CWC7H9 Real-time Rendering of Enhanced Shallow Water Fluid Simulations - 2013 | Antonio Susín, Jesús Ojeda | Computers & Graphics | 9 pp.
  Micro abstract: Builds a real-time rendering pipeline for shallow-water simulations, adding fine surface detail, advected foam, photon-based caustics, and screen-space reflection and refraction.
- #MVUJ8Z Real-time Rendering of River Networks - 2010 | Quintijn Hendrickx, Rafael Bidarra, Ruben M. Smelik | Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games | 1 pp.
  Micro abstract: Renders branching river networks efficiently with quadratic Bézier curves, GPU distance fields, and streaming normal maps instead of dense geometry or particle simulation.
- #5MGCZ5 Real-time River Representation by Dynamic Control of Data on Waves - 2008 | Makoto Kosugi, Nobuhiko Mukai, Yasuhiro Kato | 4 pp. | doi:10.3169/itej.62.2063
  Micro abstract: Dynamically switches river-wave models by viewing distance, preserving nearby reflection and wave detail while retaining wind-driven motion across the full landscape.
- #XDESU9 Scalable real‐time animation of rivers - 2009 | Eric Bruneton, Fabrice Neyret, Nicolas Holzschuch, Qizhi Yu | Computer Graphics Forum | 11 pp. | doi:10.1111/j.1467-8659.2009.01363.x
  Micro abstract: Animates rivers across vast terrains by computing steady flow locally and advecting fine surface detail only where visible, at a screen-space sampling density.
- #869NHK Very Fast Real-Time Ocean Wave Foam Rendering Using Halftoning - 2011 | Ian Parberry, Jennifer R. Alford, Mary Yingst | Proceedings of the 6th International North American Conference on Intelligent Games and Simulation (GAMEON-NA) | 7 pp.
  Micro abstract: Uses a spectrally controlled halftone mask to make texture-based ocean foam dissipate as clumped bubbles that pop, rather than merely fading transparently.
- #A2QB8L Water Flow in Portal 2 - 2010 | Alex Vlachos | ACM SIGGRAPH 2010 Course: Advances in Real-Time Rendering in 3D Graphics and Games | 54 pp.
  Micro abstract: Explains Portal 2’s production-friendly water shader: artist-painted flow maps advect layered normal maps, while offsets and noise suppress repetition and pulsing on limited hardware.
- #PBM2TC Water surface wavelets - 2018 | Chris Wojtan, Matthias Müller-Fischer, Miles Macklin, Nuttapong Chentanez, Stefan Jeschke, Tomáš Skřivan | ACM Transactions on Graphics | 13 pp. | doi:10.1145/3197517.3201336
  Micro abstract: Represents water waves as spatially varying directional amplitudes, enabling vast interactive simulations with fine detail, moving obstacles, solid coupling, and direct artistic control.

Unfiled (13)
- #GANFP9 A Fundamental Duality in the Mathematical and Natural Sciences: From Logic to Biology - 2024 | David Ellerman | 53 pp.
  Micro abstract: Traces an overlooked subset–partition duality—from logic and category theory through entropy and quantum indefiniteness to selectionist and generative mechanisms in biology.
- #ABD2B8 Between Tech and Art: The Vegetation of Horizon Zero Dawn - 2018 | Gilbert Sanders, Guerrilla Games | Game Developers Conference (GDC) 2018 | 87 pp.
  Micro abstract: A production breakdown of Horizon Zero Dawn’s vegetation pipeline, covering global wind simulation, layered foliage motion, coverage-preserving alpha mipmaps, shading, asset LODs, placement, and cascaded shadows.
- #2284QZ From features to fingerprints: A general diagnostic framework for anthropogenic geomorphology - 2019 | Damian Evans, Erle C Ellis, Giulia Sofia, Paolo Tarolli, Wenfang Cao | Progress in Physical Geography: Earth and Environment | 34 pp. | doi:10.1177/0309133318825284
  Micro abstract: Integrates geomorphology, archaeology, and high-resolution remote sensing into a framework for reading anthropogenic landforms as landscape-scale sociocultural fingerprints.
- #66Q3W3 Ghost of Tsushima: Procedural Grass - 2021 | Eric Wohllaib, Sucker Punch Productions | Game Developers Conference (GDC) 2021 | 55 pp.
  Micro abstract: Explains Ghost of Tsushima’s compute-driven grass pipeline, from tiled placement and culling to indirect drawing, cubic Bézier blade geometry, variable LOD, wind animation, and material shading.
- #QHMFH2 Improved Alpha Testing Using Hashed Sampling - 2019 | Chris Wyman, Morgan McGuire | IEEE Transactions on Visualization and Computer Graphics | 12 pp. | doi:10.1109/TVCG.2017.2739149
  Micro abstract: Develops hashed alpha testing, a stable quasi-random thresholding method that preserves distant alpha-mapped foliage and hair while controlling flicker, anisotropy, and interactions with TAA and alpha-to-coverage.
- #K82AS7 Legacy sediment: Definitions and processes of episodically produced anthropogenic sediment - 2013 | L. Allan James | Anthropocene | 11 pp. | doi:10.1016/j.ancene.2013.04.001
  Micro abstract: Broadens legacy sediment to episodically produced anthropogenic alluvium and colluvium, and explains its deposition, storage, and remobilization through sediment delivery–transport capacity dynamics.
- #C8FHDZ On implication and negation in partition logic - 2025 |  , David Ellerman | Open Journal of Mathematical Sciences | 9 pp. | doi:10.30538/oms2025.0250
  Micro abstract: Develops implication as a refinement-sensitive operation on set partitions, showing how relative negation yields local Boolean cores within the non-distributive algebra of partitions.
- #EARFEK Procedural Generation of Villages on Arbitrary Terrains - 2012 | Adrien Bernhardt, Adrien Peytavie, Arnaud Emilien, Eric Galin, Marie-Paule Cani | The Visual Computer | 10 pp. | doi:10.1007/s00371-012-0699-7
  Micro abstract: Presents a three-stage procedural model that grows terrain-responsive village roads and settlements, partitions land into plausible parcels, and generates slope-adapted buildings with open shape grammars.
- #EDURTK Real-Time GPU Tree Generation - 2025 | Bastian Kuth, Carsten Faber, Dominik Baumeister, Max Oberberger, Pirmin Pfeifer, Quirin Meyer, Seyedmasih Tabaei | High-Performance Graphics – Symposium Papers | 10 pp. | doi:10.2312/hpg.20251168
  Micro abstract: Introduces a GPU work-graph pipeline that generates, animates, edits, and continuously LODs detailed seasonal trees every frame, replacing gigabytes of baked geometry with kilobytes of parameters.
- #GBXEP3 Realistic Modeling and Rendering of Plant Ecosystems - 1998 | Bernd Lintermann, Matt Pharr, Oliver Deussen, Pat Hanrahan, Przemyslaw Prusinkiewicz, Radomír Měch | Proceedings of SIGGRAPH ’98 | 12 pp. | doi:10.1145/280814.280898
  Micro abstract: Presents a foundational pipeline for authoring plant ecosystems through terrain design, ecological simulation, procedural plant models, approximate instancing, and efficient rendering of billion-primitive scenes.
- #BDBBL6 Real‐time Realistic Rendering and Lighting of Forests - 2012 | Eric Bruneton, Fabrice Neyret | Computer Graphics Forum | 11 pp. | doi:10.1111/j.1467-8659.2012.03016.x
  Micro abstract: Combines detailed z-field trees with terrain shader-maps to render immense forests in real time, preserving sun, sky, canopy, and ground-lighting effects through seamless, scale-consistent transitions.
- #PQ68ZH Responsive Real-Time Grass Rendering for General 3D Scenes - 2017 | Klemens Jahrmann, Michael Wimmer | Proceedings of the 2017 Symposium on Interactive 3D Graphics and Games (I3D ’17) | 10 pp. | doi:10.1145/3023368.3023380
  Micro abstract: Renders every grass blade as responsive tessellated geometry on arbitrary 3D surfaces, with per-blade wind, gravity, and collision physics plus aggressive culling that retains dense fields in real time.
- #ARP5U7 The Topography of Minoan Peak Sanctuaries - 1983 | A. A. D. Peatfield | The Annual of the British School at Athens | 8 pp. | doi:10.1017/s0068245400019729
  Micro abstract: Argues that Minoan peak sanctuaries were chosen for visibility and proximity to local settlements, forming a beacon-like sacred network whose contraction tracked settlement abandonment rather than cultic collapse.

### 6. Assistant tool calls

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "GANFP9",
  "folder": "Living Structure, Wholeness & Beauty"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "ABD2B8",
  "folder": "Procedural Generation & Co-Creation"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "2284QZ",
  "folder": "Terrain, Hydrology & Erosion"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "66Q3W3",
  "folder": "Procedural Generation & Co-Creation"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "QHMFH2",
  "folder": "Procedural Generation & Co-Creation"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "K82AS7",
  "folder": "Terrain, Hydrology & Erosion"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "C8FHDZ",
  "folder": "Living Structure, Wholeness & Beauty"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "EARFEK",
  "folder": "Procedural Generation & Co-Creation"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "EDURTK",
  "folder": "Procedural Generation & Co-Creation"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "GBXEP3",
  "folder": "Procedural Generation & Co-Creation"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "BDBBL6",
  "folder": "Procedural Generation & Co-Creation"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "PQ68ZH",
  "folder": "Procedural Generation & Co-Creation"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "ARP5U7",
  "folder": "Roads, Trails & Movement"
}
```

### 7. Assistant tool calls

#### Tool call: `document_import`

```json
{
  "action": "extract",
  "run_id": "VGCZDU"
}
```

### 8. Tool result: document_import

{
  "status": {
    "files": [
      {
        "error": null,
        "status": "completed",
        "file_id": "4JNVT3",
        "execution_id": "pex_efJviSCrP65W"
      },
      {
        "error": null,
        "status": "completed",
        "file_id": "727M5H",
        "execution_id": "pex_YI7CSOOSQ9ya"
      },
      {
        "error": null,
        "status": "completed",
        "file_id": "F6QAG9",
        "execution_id": "pex_Fw50D2n0RWxW"
      },
      {
        "error": null,
        "status": "completed",
        "file_id": "KZLTKG",
        "execution_id": "pex_Y_-pkDkCjTVr"
      },
      {
        "error": null,
        "status": "completed",
        "file_id": "RBRZSS",
        "execution_id": "pex_C__q_BHqgcvi"
      },
      {
        "error": null,
        "status": "completed",
        "file_id": "RU8TRT",
        "execution_id": "pex_0i6op2NBC4Q5"
      },
      {
        "error": null,
        "status": "completed",
        "file_id": "SZYPPA",
        "execution_id": "pex_KqTMMD32GE1y"
      },
      {
        "error": null,
        "status": "completed",
        "file_id": "YAFKTX",
        "execution_id": "pex_Z2DSyQf-qz5n"
      }
    ],
    "counts": {
      "completed": 8
    }
  },
  "action": "extract",
  "completed": 8,
  "run_id": "VGCZDU",
  "submitted": 8
}

### 9. Tool result: update_document_metadata

Updated metadata for #GANFP9: folder

### 10. Tool result: update_document_metadata

Updated metadata for #ABD2B8: folder

### 11. Assistant tool calls

#### Tool call: `document_import`

```json
{
  "action": "inspect",
  "run_id": "VGCZDU"
}
```

### 12. Tool result: document_import

{
  "status": {
    "files": [
      {
        "error": null,
        "status": "completed",
        "file_id": "4JNVT3",
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### 13. Tool result: update_document_metadata

Updated metadata for #2284QZ: folder

### 14. Assistant tool calls

#### Tool call: `document_import`

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### 15. Tool result: update_document_metadata

Updated metadata for #66Q3W3: folder

### 16. Tool result: document_import

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### 17. Tool result: update_document_metadata

Updated metadata for #FQCWKV: kind, title, authors, year, venue

### 18. Tool result: update_document_metadata

Updated metadata for #3TZK66: kind, title, authors, year, venue

### 19. Assistant tool calls

#### Tool call: `document_import`

```json
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### 20. Tool result: update_document_metadata

Updated metadata for #C8FHDZ: folder

### 21. Tool result: document_import

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        },
        "year": "2003",
        "model": "google:gemini-3.1-flash-lite-preview",
        "authors": [
          "Barry Smith",
          "David M. Mark"
        ],
        "doi": null,
        "publication": "Environment & Planning B (Planning and Design)",
        "confidence": "high",
        "pages": "411–427",
        "notes": "Preprint version of a paper published in Environment & Planning B (Planning and Design), 30(3) (2003), 411–427",
        "issue": "3",
        "volume": "30",
        "isbn": null,
        "source_filename": "977b8f1aadb9c67728437ef37e9ffba887734ebceb9f6ac8a20c9245fc330236.pdf"
      },
      "document_id": "M8BQ3S",
      "wrote": false
    },
    {
      "match": {
        "reason": "no DOI or ISBN found",
        "source": "none",
        "score": 0.0,
        "accept?": false
      },
      "metadata": {
        "title": "About the Unreal",
        "usage": {
          "cost": {
            "total": 6.71e-4,
            "tokens": 6.71e-4,
            "tools": 0.0,
            "images": 0.0,
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            "input_cost": 4.44e-4,
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        "year": "2025",
        "model": "google:gemini-3.1-flash-lite-preview",
        "authors": [
          "John Beverley",
          "Jim Logan",
          "Barry Smith"
        ],
        "doi": null,
        "publication": "Proceedings of the Joint Ontology Workshops (JOWO) - Episode XI: The Sicilian Summer under the Etna",
        "confidence": "high",
        "pages": null,
        "notes": "Co-located with the 15th International Conference on Formal Ontology in Information Systems (FOIS 2025).",
        "issue": null,
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      },
      "document_id": "SF7KYZ",
      "wrote": false
    }
  ],
  "run_id": "VGCZDU"
}

### 22. Tool result: update_document_metadata

Updated metadata for #EARFEK: folder

### 23. Assistant tool calls

#### Tool call: `document_import`

```json
{
  "action": "validate",
  "run_id": "VGCZDU"
}
```

### 24. Tool result: update_document_metadata

Updated metadata for #GBXEP3: folder

### 25. Assistant

Imported and validated all eight PDFs:

- *Carving Up Reality* — #XYERFR
- *Environmental Metaphysics* — #56MWAA
- *Boundaries: An Essay in Mereotopology* — #7YZU95
- *Do Mountains Exist? Towards an Ontology of Landforms* — #M8BQ3S
- *A Theory of Granular Partitions* — #FQCWKV
- *Capabilities: An Ontology* — #3TZK66
- *About the Unreal* — #SF7KYZ
- *Diagrams, Documents, and the Meshing of Plans* — #GSLMP8

Metadata and search indexes are complete. All documents passed reader validation with no embedding errors.

### 26. Tool result: update_document_metadata

Updated metadata for #XYERFR: kind, title, authors, year, venue

### 27. Tool result: update_document_metadata

Updated metadata for #56MWAA: kind, title, authors, year, venue

### 28. Tool result: update_document_metadata

Updated metadata for #7YZU95: kind, title, authors, year, venue

### 29. Tool result: update_document_metadata

Updated metadata for #FQCWKV: kind, title, authors, year, venue

### 30. Tool result: update_document_metadata

Updated metadata for #3TZK66: kind, title, authors, year, venue

### 31. Tool result: update_document_metadata

Updated metadata for #M8BQ3S: kind, title, authors, year, venue

### 32. Tool result: update_document_metadata

Updated metadata for #SF7KYZ: kind, title, authors, year, venue

### 33. Assistant tool calls

#### Tool call: `document_import`

```json
{
  "action": "validate",
  "run_id": "VGCZDU"
}
```

### 34. Tool result: document_import

{
  "action": "validate",
  "documents": [
    {
      "title": "Diagrams, Documents, and the Meshing of Plans",
      "valid": true,
      "document_id": "GSLMP8",
      "readable_chunks": 98,
      "source_pages": 13,
      "reader_path": "/GSLMP8"
    },
    {
      "title": "Carving Up Reality",
      "valid": true,
      "document_id": "XYERFR",
      "readable_chunks": 76,
      "source_pages": 14,
      "reader_path": "/XYERFR"
    },
    {
      "title": "Environmental Metaphysics",
      "valid": true,
      "document_id": "56MWAA",
      "readable_chunks": 50,
      "source_pages": 12,
      "reader_path": "/56MWAA"
    },
    {
      "title": "Boundaries: An Essay in Mereotopology",
      "valid": true,
      "document_id": "7YZU95",
      "readable_chunks": 292,
      "source_pages": 32,
      "reader_path": "/7YZU95"
    },
    {
      "title": "A Theory of Granular Partitions",
      "valid": true,
      "document_id": "FQCWKV",
      "readable_chunks": 271,
      "source_pages": 33,
      "reader_path": "/FQCWKV"
    },
    {
      "title": "Capabilities: An Ontology",
      "valid": true,
      "document_id": "3TZK66",
      "readable_chunks": 111,
      "source_pages": 14,
      "reader_path": "/3TZK66"
    },
    {
      "title": "Do Mountains Exist? Towards an Ontology of Landforms",
      "valid": true,
      "document_id": "M8BQ3S",
      "readable_chunks": 82,
      "source_pages": 22,
      "reader_path": "/M8BQ3S"
    },
    {
      "title": "About the Unreal",
      "valid": true,
      "document_id": "SF7KYZ",
      "readable_chunks": 100,
      "source_pages": 14,
      "reader_path": "/SF7KYZ"
    }
  ],
  "run_id": "VGCZDU",
  "search_rows": 11531,
  "embedding_status": "completed",
  "embedding_errors": 0
}

### 35. Assistant

Imported and validated all eight PDFs:

- *Carving Up Reality* — #XYERFR
- *Environmental Metaphysics* — #56MWAA
- *Boundaries: An Essay in Mereotopology* — #7YZU95
- *Do Mountains Exist? Towards an Ontology of Landforms* — #M8BQ3S
- *A Theory of Granular Partitions* — #FQCWKV
- *Capabilities: An Ontology* — #3TZK66
- *About the Unreal* — #SF7KYZ
- *Diagrams, Documents, and the Meshing of Plans* — #GSLMP8

Metadata and search indexes are complete. All documents passed reader validation with no embedding errors.

### 36. User

let's learn about them so we can set good microabstracts and make artworks for each of these

### 37. Assistant tool calls

#### Tool call: `get_document`

```json
{
  "id": "XYERFR"
}
```

#### Tool call: `get_document`

```json
{
  "id": "56MWAA"
}
```

#### Tool call: `get_document`

```json
{
  "id": "7YZU95"
}
```

#### Tool call: `get_document`

```json
{
  "id": "M8BQ3S"
}
```

#### Tool call: `get_document`

```json
{
  "id": "FQCWKV"
}
```

#### Tool call: `get_document`

```json
{
  "id": "3TZK66"
}
```

#### Tool call: `get_document`

```json
{
  "id": "SF7KYZ"
}
```

#### Tool call: `get_document`

```json
{
  "id": "GSLMP8"
}
```

### 38. Tool result: get_document

DOCUMENT #XYERFR
Title: Carving Up Reality

Outline:
  - 1 #UYEXSM Carving Up Reality
    - 1.1 #XY8TYU 1. The Problem of the Many
    - 1.2 #MB4VPZ 2. The Granularity Problem Posed
    - 1.3 #8HR7LJ 3. The Granularity Problem Solved
    - 1.4 #CKWUCA 4. Towards a Theory of Partitions1
    - 1.5 #WEPLCP 5. Partitions, Sets and Fusions
    - 1.6 #CB54XA 6. A Coda on Realism and the Objectivity of Truth

### 39. Tool result: get_document

DOCUMENT #56MWAA
Title: Environmental Metaphysics

Outline:
  - 1 #A744FG Environmental Metaphysics
    - 1.1 #CZ8FBE 1. Environments: Types and Tokens
    - 1.2 #KU6JHE 2. The Structure of Niches
    - 1.3 #ES8596 3. The Medium for Life
    - 1.4 #M6WYY6 4. Retainers and Fiat Boundaries
    - 1.5 #WMTBK4 5. Security vs. Freedom of Movement
    - 1.6 #WDUMZA 6. Niche Construction
    - 1.7 #A4NTER 7. From Ecometaphysics to Environmental Ethics
    - 1.8 #YCMYCD Acknowledgments
    - 1.9 #WENWXR References

### 40. Tool result: get_document

DOCUMENT #7YZU95
Title: Boundaries: An Essay in Mereotopology

Outline:
  - 1 #RBUH86 Boundaries: An Essay in Mereotopology1
    - 1.1 #G3GGCD Introduction
    - 1.2 #DKMEJR The Brentano-Chisholm Theory of the Continuum
    - 1.3 #QTKRQM Set Theory
    - 1.4 #S83P9V Mereology
    - 1.5 #5FAE8D Plerosis
    - 1.6 #A5EDZ6 The Formalization of the Brentano-Chisholm Theory
      - 1.6.1 #2ZAUBH Coincidence
      - 1.6.2 #WDHJXQ Bodies
    - 1.7 #P8BRYH Boundaries
      - 1.7.1 #AFLGKV If There Be Monsters
    - 1.8 #836SUT Varieties of Connectedness
      - 1.8.1 #ZQP35X Touching
      - 1.8.2 #CC4MY2 Contact
      - 1.8.3 #4MYQQ8 Boundary Of
      - 1.8.4 #E4UVCT Connectedness for Boundaries
      - 1.8.5 #R3Y3M2 Substance
      - 1.8.6 #5T4RSH Dimensions
    - 1.9 #X4V2VT Points, Lines and Surfaces
    - 1.10 #9XRHUY References

### 41. Tool result: get_document

DOCUMENT #M8BQ3S
Title: Do Mountains Exist? Towards an Ontology of Landforms

Outline:
  - 1 #AWSMPY Do Mountains Exist ?Towards an Ontology of Landforms
    - 1.1 #S899WT Abstract
    - 1.2 #282A8F Introduction
    - 1.3 #P764B9 Ontology
    - 1.4 #7YRD5Y Ontology and Information Systems
    - 1.5 #72WDSP Primary Theory
      - 1.5.1 #NPT5HQ Categories
      - 1.5.2 #XMF55T The Primary Theory of the Geographic Domain
      - 1.5.3 #DT62MW Objects vs. Fields
      - 1.5.4 #LLSL2F The Truth about Earth
    - 1.6 #2FUAG9 Landscapes as Fields
      - 1.6.1 #CPL7M2 Geographic Objects
      - 1.6.2 #YJ5RGA Water Forms
    - 1.7 #P7T5XV Topography and Environmental Modeling
    - 1.8 #7FVRZS Ontology of Land Forms and the Status of Geomorphology
    - 1.9 #VLEBW6 Conclusions
    - 1.10 #H8E6KL Acknowledgements
    - 1.11 #FYYBQ8 References

### 42. Tool result: get_document

DOCUMENT #FQCWKV
Title: A Theory of Granular Partitions

Outline:
  - 1 #QCRBYG CHAPTER 1
    - 1.1 #V7KTGZ A Theory of Granular Partitions
      - 1.1.1 #HADPD5 1 INTRODUCTION
      - 1.1.2 #BHVZQQ 2 TYPES OF GRANULAR PARTITIONS
      - 1.1.3 #A74QRX 3 GRANULAR PARTITIONS AS SYSTEM OF CELLS
        - 1.1.3.1 #PP6B9Q 3.1 A bipartite theory
        - 1.1.3.2 #ML3GN4 3.2 The subcell relation
        - 1.1.3.3 #2LJNRR 3.3 Existence of a maximal cell
        - 1.1.3.4 #7Y2V3Z 3.4 Finite chain condition
        - 1.1.3.5 #7UH4UA 3.5 Partition-theoretic sum and product of cells
        - 1.1.3.6 #Q65BLD 3.6 Trees
      - 1.1.4 #PYMKJQ 4 GRANULAR PARTITIONS IN THEIR PROJECTIVE RELATION TO REALITY
        - 1.1.4.1 #CBV5HG 4.1 Projection
        - 1.1.4.2 #X57HET 4.2 Location
        - 1.1.4.3 #K2LWW7 4.3 Transparency
        - 1.1.4.4 #7BK7KZ 4.4 Functionality constraints (constraints pertaining to correspondence to objects)
          - 1.1.4.4.1 #DR2XFU 4.4.1 Projection is functional: the confused schoolboy
          - 1.1.4.4.2 #NBA7LN 4.4.2 Location is functional: the Morning Star and the Evening Star
      - 1.1.5 #ZSJP4W 5 CORRESPONDENCE OF MEREOLOGICAL STRUCTURE
        - 1.1.5.1 #AG35RL 5.1 Recognizing mereological structure
        - 1.1.5.2 #BV9UTU 5.2 The domain of a partition
        - 1.1.5.3 #N5T557 5.3 The granularity of granular partitions
      - 1.1.6 #8X3P8G 6 STRUCTURAL PROPERTIES OF CORRECT REPRESENTATIONS
        - 1.1.6.1 #N33X7A 6.1 Mereological monotony
        - 1.1.6.2 #Z2LAY5 6.2 Completeness
        - 1.1.6.3 #MJ87KT 6.3 Exhaustiveness
        - 1.1.6.4 #Z2PHR2 6.4 Comprehension axioms
        - 1.1.6.5 #UDYCVD 6.5 Redundancy
      - 1.1.7 #ZK25N3 7 FULLNESS AND CUMULATIVENESS
        - 1.1.7.1 #Q76SY7 7.1 Fullness
        - 1.1.7.2 #FH6U8D 7.2 Empty space
        - 1.1.7.3 #B7BPVR 7.3 Empty space and knowledge
        - 1.1.7.4 #2KRYYK 7.4 Fullness and emptiness
        - 1.1.7.5 #PUSKWJ 7.5 Cumulativeness
        - 1.1.7.6 #TSKFB6 7.6 Classes of partitions regarding fullness and cumulateness
      - 1.1.8 #FU66UM 8 IDENTITY OF GRANULAR PARTITIONS
      - 1.1.9 #Q4TMPJ 9 RELATED WORK
      - 1.1.10 #G5GBKW 10 CONCLUSIONS
      - 1.1.11 #GWH2MS ACKNOWLEDGMENTS
    - 1.2 #XDPMTZ REFERENCES

### 43. Tool result: get_document

DOCUMENT #3TZK66
Title: Capabilities: An Ontology

Outline:
  - 1 #TDZ4EG Capabilities: An Ontology
    - 1.1 #D2UCXV Abstract
    - 1.2 #875NV3 Keywords
    - 1.3 #Q4LDQQ 1. Introduction
    - 1.4 #GMTABN 2. Characterizations of Capabilities
      - 1.4.1 #EDSBYF 2.1. Hallmarks of Capabilities
    - 1.5 #FH55LN 3. Basic Formal Ontology
      - 1.5.1 #N42WUD 3.1. The Basic Formal Ontology Hierarchy
    - 1.6 #EUW287 4. Defining 'Capability'
      - 1.6.1 #XTREKS 4.1. Interest In
      - 1.6.2 #GUAQJW 4.2. Not All Capabilities are Functions
      - 1.6.3 #ME5F53 4.3. All Functions are Capabilities
      - 1.6.4 #ZG4NMD 4.4. Functions vs Role
      - 1.6.5 #YU2T29 4.5. Capability Death
      - 1.6.6 #CADS9C 4.6. Capability Birth
      - 1.6.7 #R2PBJD 4.7. Objections and Responses
    - 1.7 #2DTZPR 5. Conclusion
    - 1.8 #DYDFLB References

### 44. Tool result: get_document

DOCUMENT #SF7KYZ
Title: About the Unreal

Outline:
  - 1 #7WXR3G About the Unreal
    - 1.1 #KUKRU3 1. Information and Aboutness
    - 1.2 #ZS8SHA 2. Three Cases
      - 1.2.1 #X6YG4U 2.1 Fiction
      - 1.2.2 #VTG7T4 2.2 Blueprints
      - 1.2.3 #C3FVUF 2.3 Simulation
      - 1.2.4 #ELQQVT 2.4 Connecting Themes
    - 1.3 #YSNAPG 3. OWL and Dummy Instances
    - 1.4 #VRXLVM 4. Unreal Patterns
      - 1.4.1 #V3H7YJ 4.1 Specializations of Information
      - 1.4.2 #6BFXWZ 4.2 Recursive Recipe
      - 1.4.3 #MVM66N 4.3 Superman
      - 1.4.4 #HQW3XC 4.4 Honda Civic SLS 2035
      - 1.4.5 #X9DD7S 4.5 War Games
    - 1.5 #W7SGPP 5. Excursus on the Future
    - 1.6 #7DNJWT 6. Conclusion
    - 1.7 #6D2JWG References

### 45. Tool result: get_document

DOCUMENT #GSLMP8
Title: Diagrams, Documents, and the Meshing of Plans

Outline:
  - 1 #MGE2X6 Diagrams, Documents, and the Meshing of Plans1
    - 1.1 #UDUTK5 Preamble: From Linear Text to Images
    - 1.2 #3773A5 How To Do Things With Documents
      - 1.2.1 #KA3WCC Chemical Diagrams
      - 1.2.2 #TVEP5V Architectural Diagrams
    - 1.3 #EAZ3BD Worlds Enhanced by Documents
    - 1.4 #3BHQKE From Speech Acts to Document Acts
      - 1.4.1 #U7TNMA Chains of Command
    - 1.5 #62NMPE The Ontology of Orchestral Performance
      - 1.5.1 #JQZFFM Massively Planned Social Agency
      - 1.5.2 #76729M A Virtual Choir
    - 1.6 #GC3Z5S Conclusion

### 46. Assistant tool calls

#### Tool call: `read`

```json
{
  "blocks": [
    "UYEXSM",
    "MB4VPZ",
    "8HR7LJ",
    "CB54XA"
  ],
  "expand": true
}
```

#### Tool call: `read`

```json
{
  "blocks": [
    "A744FG",
    "CZ8FBE",
    "A4NTER"
  ],
  "expand": true
}
```

#### Tool call: `read`

```json
{
  "blocks": [
    "G3GGCD",
    "DKMEJR",
    "X4V2VT"
  ],
  "expand": true
}
```

#### Tool call: `read`

```json
{
  "blocks": [
    "S899WT",
    "282A8F",
    "VLEBW6"
  ],
  "expand": true
}
```

#### Tool call: `read`

```json
{
  "blocks": [
    "HADPD5",
    "PYMKJQ",
    "G5GBKW"
  ],
  "expand": true
}
```

#### Tool call: `read`

```json
{
  "blocks": [
    "D2UCXV",
    "Q4LDQQ",
    "EUW287",
    "2DTZPR"
  ],
  "expand": true
}
```

#### Tool call: `read`

```json
{
  "blocks": [
    "KUKRU3",
    "ELQQVT",
    "VRXLVM",
    "7DNJWT"
  ],
  "expand": true
}
```

#### Tool call: `read`

```json
{
  "blocks": [
    "UDUTK5",
    "3773A5",
    "GC3Z5S"
  ],
  "expand": true
}
```

### 47. Tool result: read

DOCUMENT #XYERFR
Carving Up Reality

SECTION #UYEXSM Carving Up Reality

EXCERPT #A6M8ZJ p. 0
  Barry Smith

EXCERPT #9ZACPT p. 0
  Preprint version of a paper published in: Michael Gorman and Jonathan Sanford, Categories: Historical and Systematic Essays , Washington DC: Catholic University of America Press, 2004, 225–237.

SECTION #XY8TYU 1. The Problem of the Many

EXCERPT #MQBV7X p. 0
  Think of Mont Blanc, with its rabbits and foothills and its slurries of moistened rock. We can carve up the reality around Mont Blanc in different ways. If we are hunters, we might include rabbits as parts of the mountain; if we are geologists we might include only rock, perhaps together with a certain amount of air in the crevices and tunnels which have been formed beneath the mountain surface; if, on the other hand, we are soil chemists we might include also a surrounding thin layer of organic matter; if we are skiers, we will want some snow; and if we are French or Italian government surveyors, then our respective maps of the mountain might include slightly different determinations as to where, precisely, its borders lie. If we are armed with a microscope we will discover that, the closer we approach the surface of the mountain, the more questionable does the belongingness or non-belongingness of microscopic particles to the mountain itself begin to appear. What could make it true, given some atom or molecule very near the surface of the mountain, that it is, or it not, a part of the mountain? Reflection on such puzzles suggests the hypothesis – expounded in the literature on vagueness under the heading ‘supervaluationism’ – that there is no single answer to the question as to what it is to which ‘Mont Blanc’ refers. Rather there are, at any given time, many answers; many parcels of reality that deserve the name ‘Mont Blanc.’

EXCERPT #G7YDBJ p. 0
  Something similar applies also to you yourself, and indeed to every other organism. When you refer to John, you do not think of all the parts of John or of his immediate surroundings. You do not think of the cells in John’s arm, or the fly next to his ear, or the neutrinos that pass through his body. These things do not fall under the beam of your referential searchlight. Rather, they are traced over. John is apprehended by you as a single, unitary object. His dermatologist, though, has a different perspective, for he is all too well aware that, like

EXCERPT #BMKHYB p. 1

EXCERPT #CXRKAW p. 1
  Mont Blanc, John has questionable parts and that there are at the molecular level many overlapping aggregates of matter all of which have a claim to being John. Notice that this is not an epistemological matter. Even an omniscient being would be in the same predicament as you or me as concerns where the boundaries of John, or Mont Blanc, precisely lie.

EXCERPT #7SY9PN p. 1
  That John is losing or gaining molecules from one moment to the next is however of no consequence for our everyday purposes: it falls below our normal threshold of concern. Our cognitive habits have thus developed in such a way that they relate to reality in a coarse-grained fashion , and this allows us to ignore questions as to the lower-level constituents of the objects foregrounded by our referential searchlight. This in its turn is what allows such objects to be specified, not precisely, but rather in such a way that a range of alternative but nearly identical objects are simultaneously comprehended within the scope of what we see or refer to. We do not recognize this ‘many’ because we are focused, precisely, on those parts and moments of the matters in hand which lie above the pertinent granularity threshold. On the level of granularity we embrace in our everyday cognitive activities it is as if there is just one object which serves as the focus of our attentions.

EXCERPT #WMHJK6 p. 1
  The acts in which we make reference to objects in reality thus bring about a partitioning of reality into two domains: the foreground domain, within which the relevant object is located, and the background domain, which comprehends all entities left in the dark by the operating perceptual or referential searchlight. But how is this partitioning to be understood? Certainly it cannot be understood in terms of any simple pigeonholing of reality into jointly exhaustive and mutually exclusive parts, either of the sort that is involved in a system of categories like that of Aristotle or of the sort that underlies the periodic table of the chemical elements. Nor can the foreground-background partition be understood along geographical lines (by analogy with the sort of partition which might be depicted on a map). Thus it is not as if one connected, compact (hole-free) portion of reality is set into relief in relation to its surroundings, as on old maps of the known world surrounded by terrae incognitae , or on contemporary maps in which Beverly Hills is represented as something which is set into relief within the wider surrounding territory of Los Angeles. For if an object is included in the foreground domain, this does not imply that all the parts of the object are also included therein. This is because each partition comes with its own granularity, and this means that it does not recognize parts beneath a certain size. It is for this reason that each partition is compatible with a range of possible views, and indeed with no view at all, as to the ultimate constituents of the objects included in its foreground domain.

EXCERPT #9HG585 p. 2

SECTION #MB4VPZ 2. The Granularity Problem Posed

EXCERPT #M3Y44A p. 2
  If, however, partitions are effected not in any simple geographical way, but rather in such a way as to be marked by a certain granularity, then this brings a serious problem for our standard views of how reference and perception work – a new variant on older problems connected with intensionality, opacity and substitution. The problem turns on the fact that the relation of a part to its whole is transitive. Consider the question of what Mary sees when she sees John raising his hand. The following must all simultaneously be true:

EXCERPT #8AC2UK p. 2
  A. The molecules inside John are parts of John. B. John is part of what Mary sees. C. The molecules inside John are not a part of what Mary sees.

EXCERPT #JZBT8H p. 2
  These sentences cannot be simultaneously true in the presence of the (independently attractive-seeming) principle of the transitivity of parthood:

EXCERPT #3LGK75 p. 2
  D. If x is part of y , and y is part of z , then x is part of z .

EXCERPT #54JD7K p. 2
  Counterpart triads can be constructed in regard to a host of other types of entities: truthmakers, facts, states of affairs, situations, surfaces, aspects, pluralities, shadows, visual fields, persons, Husserl's 'noemata', Kant's 'phenomenal world', Fine's 'qua objects', and so on. Thus, for example, we might have:

EXCERPT #TSJA7B p. 2
  A'. The molecules inside John are parts of John. B'. John is part of what makes it true that John is raising his hand. C'. The molecules inside John are not a part of what makes it true that John is raising his hand.

EXCERPT #9VTGPV p. 2
  Clearly if we are to do justice ontologically to the facts of granularity, then some way must be found to explain how the sentences in each of these triads can be simultaneously true, and this means that some way must be found to block the transitivity of parthood (thus for example to block the move from 'x is visible' and 'y is part of x' to: 'y is visible'). We can formulate an analogous triad also in relation to entire domains, for example in relation to the domain of what might be called 'common-sense reality':

EXCERPT #3E2QQG p. 3

EXCERPT #NMDZC3 p. 3
  A". The molecules inside John are parts of John.

EXCERPT #QHPLRL p. 3
  B". John is part of common-sense reality.

EXCERPT #MYVLUY p. 3
  C". The molecules inside John are not a part of common-sense reality.

EXCERPT #L6GT3Q p. 3
  One way to resolve the problem is to refuse to take expressions like 'fact,' 'sense datum,' 'what Mary sees,' or 'common-sense reality' seriously as referring to special sorts of entities. One is then simply not allowed to ask, for example, whether molecules of paint are or are not a part of the sense data which John sees when he focuses on a painted wall. To suppose that a part-whole relation might obtain (or not obtain) here is to be guilty of what some like to call a 'category mistake'.

EXCERPT #V6WMF3 p. 3
  Those interested in ontology will however persist in raising such questions nonetheless, which means that in regard to some, at least, of the types of entities mentioned, they will take such entities ontologically seriously. Sentences involving category mistakes (for example 'cardinal numbers are green') they will classify simply as unproblematic falsehoods. One standard ontological approach utilizes the phrase 'under a description' or some comparable locution. The idea is that it can be the case that some given molecule is part of John under one description (for example: physical body ), but that it is not a part of John under some other description (for example: object visible with the naked eye ). Again, however, ontological persistence reveals a problem with such approaches. For if John under these different descriptions is indeed one and the same entity, then he thereby also has, under each description, all the same parts. If, on the other hand, John under this description is a different entity from John under that description, then we are still in need of an account of how this difference is to be understood, and this brings us back to the puzzling triad with which we again.

EXCERPT #52WNNT p. 3
  Another popular starting point for the resolution of our puzzle rests on using set theory as a means of blocking the principle D. of the transitivity of parthood. The set-membership relationship is after all not transitive. But to use set theory as a means of blocking transitivity brings too great a cost. For if set theory is taken realistically, then this forces us to identify Urelemente – elements of sets which are not themselves sets – from out of which the larger worldly structures which concern us would be constructed by set-theoretical means. But what would such elements be in the case of a complex event such as John raising his hand ? And even if appropriate elements – ultimate sub-atomic particles, for example – did present themselves for purposes of set-theoretic reconstruction, problems would still arise because we would then find that our ontology is cluttered with multiple copies of reconstructed objects existing at different times and at different levels of granularity (for example, John as set of atoms, John as set of molecules, John as set of cells; this set of atoms at a time when it constitutes John, this same set of atoms at a time when its elements are scattered to the four winds; and so on). This problem of supernumerary copies does not arise for standard theories of part and whole, since the mereological sums of the atoms, molecules, cells, and so forth constituting John at some given time are all one and the same object. It is precisely this, however, which makes the mereological approach susceptible to the puzzle captured in our triad. Mereology as an instrument of ontology is, furthermore, in no better a position than set theory when it comes to the problem of doing justice to the fact that John preserves his identity from one moment to the next even in spite of the fact that he gains and loses parts.

EXCERPT #J96BN7 p. 4

SECTION #8HR7LJ 3. The Granularity Problem Solved

EXCERPT #ERFHR9 p. 4
  Consider what happens when you observe a chessboard. You are working with a partition of the world into that, in the region of the chessboard, which you are focusing on, and that which is traced over. Your focus brings with it, again, a certain granularity: you are interested, not in the atoms or molecules within the board and its pieces, but rather only in the board and the pieces themselves. Moreover, you are interested in the latter not as constituting a mere list, or set, but rather as they exist within a certain arrangement. The board is divided into squares. In some of these cells pieces of specific kinds are located.

EXCERPT #LVGCLF p. 4
  To understand what is going on here, we need to focus in more detail on the notion of a partition and on the associated notion of cell. The first thing that we need to recognize is that partitions have their granularity built in, as it were, from the very start. An administrative map of France depicting its 91 départements or its 311 arrondissements provides a close approximation to a partition in the sense we have in mind. Such a map is the result of applying a certain coarse- or fine-grained grid of cells – the minimal units of the partition – to a certain portion of reality.

EXCERPT #EUPJEZ p. 5

EXCERPT #2G3478 p. 5
  A partition is the ontological analogue of the sort of labeled grid we might find in a large post office or automobile component warehouse. For a partition to do its work, it needs to have cells large enough to contain the objects that are of interest in the portion of reality which concerns us; but at the same time these cells must somehow serve to factor out the details which are of no concern. A partition is accordingly a device for focusing upon what is salient and also for ignoring or masking what is not salient. We can think of it as being laid like a net over whatever is the relevant object-domain, and, like a net or grid (or a latticed window of the type depicted in Renaissance manuals of painting), it is to a large degree transparent. Thus, importantly, it does not in any way change the objects to which it is applied. The sorts of carvings up of reality which are effected through our partitions are comparable, not to those effected by surgeons, but rather to those we find in atlases of surgical anatomy, or indeed in the various tables of categories prepared by Aristotelian philosophers and by Linnaean biologists.

EXCERPT #X94PFG p. 5
  A partition is like a map. It is an artifact of our perceiving, judging, classifying or theorizing activity, and it exists only as a product of the cell boundaries by which it is determined. The reality partitioned, in contrast, is what and where it is, and it has all its parts and moments, independently of any acts of human fiat and in dependently of our efforts to understand it theoretically. Granularity as it has been treated in the above is thus properly at home precisely in the realm of our partitions: granularity pertains not to the objects themselves on the side of reality, but rather to the ways we partition those objects in different sorts of contexts.

EXCERPT #RTEWVS p. 5
  The arrangement of cells in a partition may be purely spatial, as in a map, where the relative positions of neighboring cells are determined by the corresponding positions of those portions of geographic reality to which the cells relate. Or it may be determined by a linear ordering, as for example where partitions are determined via quantitative scales reflecting age cohorts or temperature bands. The arrangement may also be determined in more complex (for example hierarchical) ways, as in the case of a partition determined by biological kinds (for example a multi-level partition of the animals in your local zoo into lions , tigers , spiders , small marsupials , vertebrates , and so on). The partitions which come closest to sets (or to mere lists) are those associated with our uses of proper names, partitions which we are able to project onto reality in such a way that their cells keep track of the corresponding objects in the world as objects that are identical from one moment to the next, and this in spite of the fact that these objects change and that parts are gained and lost.

EXCERPT #G45LEK p. 6

EXCERPT #69MWB5 p. 6
  Complex multidimensional partitions arise through the combination of these different types of demarcations and cell arrangements. A map of the zoo, for example, might indicate not only the places where animals are located but also the sorts and sizes and proper names of the animals which are located in those places.

SECTION #CKWUCA 4. Towards a Theory of Partitions1

EXCERPT #NZV9C4 p. 6
  The cells in a partition may have sub-cells. Thus, for example, the cell rabbit is a sub-cell of the cell mammal in a partition of the animal kingdom. The cell Florida is a sub-cell of the cell United States in the standard geopolitical partition of the surface of the globe. The sub-cell relation is then an analogue of the sub-set relation in standard set theory. An example of a chain of cells ordered by the sub-cell relation is your address (The Oval Office, The White House, 1600 Pennsylvania Avenue NW, Washington, DC 20500, USA).

EXCERPT #4FPTBJ p. 6
  Those cells in a given partition which have no sub-cells within that partition are called minimal cells. The closest counterparts to sets within our present framework are those ideal sorts of partitions which

EXCERPT #KX5FX8 p. 6
  1 The formal details underlying the ideas in this section are set out in Thomas Bittner and Barry Smith, "A Taxonomy of Granular Partitions," in Spatial Information Theory. Proceedings of COSIT 2001, Morro Bay, September 2001 , ed. Daniel Montello (New York: Springer, 2001). They were inspired on the one hand by the theory of location developed by R. Casati and A. C. Varzi, Parts and Places. The Structures of Spatial Representation (Cambridge, MA: MIT Press, 1999), and on the other hand by the machinery of granular partitions in R. Omnès, The Interpretation of Quantum Mechanics (Princeton: Princeton University Press, 1994). Omnès' theory is summarized in the forthcoming B. Smith and B. Brogaard, "Quantum Mereotopology," in Annals of Mathematics and Artificial Intelligence (forthcoming), which also contains indications as to how the theory of partitions can be extended to deal with time and change.

EXCERPT #ZLQUSE p. 7

EXCERPT #ED8KBN p. 7
  can be identified as the mereological fusions of such minimal cells. 2 The corresponding minimal cells will, again in the ideal case, constitute a perfect tiling – a jointly exhaustive and pairwise disjoint decomposition – of the pertinent domain of objects, and each cell in such a partition is itself the mereological sum of some one or more of those minimal cells.

EXCERPT #HKSD7L p. 7
  Not all partitions have these nice properties however. This is because our partitions are artifacts of our theorizing and classifying activity and thus they are often incomplete. Thus we can imagine a partition of the animal kingdom containing a cell labeled mammal , and other cells labeled rabbit , dog , etc., which is yet not such as to represent a complete accounting of all the species of mammal which exist. There are gaps in the partition, analogous to the no-man's-lands between the zones of civilization represented on ancient maps.

EXCERPT #TTSDCH p. 7
  Each partition will characteristically contain cells which are empty per accidens – because they have no objects located in them (as a chessboard will contain squares empty of pieces, and as a hotel may, on any given night, contain rooms empty of guests). Dodo is an empty cell in one standard partition of the animal kingdom. There are thus many empty cells within the domain of partitions taken as a whole.

EXCERPT #GHEQVW p. 7
  For some partitions, which we can call distributive , if object x is a part of object y , and if y is located in a cell z , then x is also located in that cell. 3 Distributive partitions satisfy a principle to the effect that, if two objects are located in two different cells, then the sum of these objects is located in the sum of these cells.

EXCERPT #5KUTLJ p. 7
  Spatial partitions are always distributive in the sense specified. If John is in Salzburg and Mary is in Salzburg, then their sum is in Salzburg and so, too, are all their bodily parts. A set, on the other hand, is a simple example of a non-distributive partition, and a partition generated by kinds or concepts, too, is non-distributive. A partition recognizing cats does not ipso facto recognize parts of cats. Moreover, if Bruno is a cat and Tibbles is a cat, then the mereological sum of Bruno and Tibbles is not itself a cat.

EXCERPT #APC7VQ p. 7
  2 The latter then play the role played by singletons in the theory of classes as the mereological sums of singletons advanced in D. Lewis, Parts of Classes (Oxford: Blackwell, 1991).

EXCERPT #CM39M6 p. 7
  3 Here 'part' is to be understood according to the usual axioms of classical extensional mereology, for example as set forth in P. Simons, Parts: An Essay in Ontology (Oxford: Clarendon Press, 1987).

EXCERPT #WNYYN4 p. 8

EXCERPT #SDD9TX p. 8
  We can define the notion of recognition that is at work here as follows. We shall say that x is recognized by A if and only if A is a partition and x is located in some cell in A .

EXCERPT #8HHHU3 p. 8
  Suppose John is recognized by a nominal partition A consisting of a single cell labeled 'John,' then this is consistent with its being the case that each member of a whole family of distinct though almost identical aggregates of molecules is recognized by A . This is because A does not care about the small (molecule-sized) differences between these different aggregates: it traces over John's molecular structure. The cell John captures all the aggregates which are almost identical to John, but it does so in such a way that it cannot apprehend those different aggregates as different. Only a more refined partition would have the resources necessary to apprehend the differences in question.

EXCERPT #MSNWAA p. 8
  We now have the machinery we need in order to explain how the three sentences of our triad can be simultaneously true. All three clauses are retained; now, however, they take the following forms:

EXCERPT #SV5DQ2 p. 8
  A*. The molecules inside John are parts of John.

EXCERPT #XULBRB p. 8
  B*. John is recognized by a partition associated with Mary's act of seeing.

EXCERPT #Y4YEPA p. 8
  C*. The molecules inside John are not recognized by any partition associated with Mary's act of seeing.

EXCERPT #7JSWQY p. 8
  The fact that the partitions available to Mary lack appropriately fine-grained cells yields a solution to our puzzle which does not require the abandonment of the transitivity of parthood.

SECTION #WEPLCP 5. Partitions, Sets and Fusions

EXCERPT #MTM4HZ p. 8
  The notion of a partition hereby turns out to be in some respects a generalization of the notion of set, and we have in effect exploited an analogue of the transitivity-blocking feature of set theory in resolving our puzzle. A set is the ontological analogue of a mere list. The elements of a set exist within the set without order or location – they can be permuted at will and the set will remain identical. A partition, in contrast, standardly comes with a specific order and location of its constituent cells. Its cells fit together in a determinate arrangement, like pieces in a jigsaw or like molecules in a strand of DNA.

EXCERPT #H3TH7B p. 8
  Partitions differ from sets also in this: that there are many different sorts of partitions, reflecting the many different sorts of relations between objects and cells. Set theory, in contrast, as Lewis shows, rests on just one central relation: the relation between an element and its singleton. Unfortunately, as Lewis himself confesses, this relation is enveloped in mystery:

EXCERPT #JVC222 p. 9

EXCERPT #QQUJ3M p. 9
  since all classes are fusions of singletons, and nothing over and above the singletons they're made of, our utter ignorance about the nature of the singletons amounts to utter ignorance about the nature of classes generally. . . . What do we know about singletons when we know only that they are atoms, and wholly distinct from the familiar individuals? What do we know about other classes, when we know only that they are composed of these atoms about which we know next to nothing? 4

EXCERPT #L7SXAD p. 9
  The machinery of partitions, in contrast, rests not just on one mysterious relation between element and singleton, but rather on a multiplicity of different (and quite unmysterious) ways we have of carving up reality. The relation between an object and its proper name is one such. Others include the relation between an object and its spatial location (for example in relation to a grid on a map), or between an object and a concept under which it falls, or between an object and a kind to which it belongs.

EXCERPT #QCHXUQ p. 9
  Objects as they exist in nature stand to each other in various relations. They have hooks of various sorts, which link them together; these include common boundaries and they include relations of dependence and of functional or causal association. The operator of mereological fusion, when properly handled, preserves these inter-object relations, and it thus preserves the order and location of objects which fall within its charge: if two objects are linked together in nature, then they are linked together also within their mereological fusion.

EXCERPT #XFBVQK p. 9
  A set is a mereological fusion of singletons, and mereological fusion preserves order and location. How can it be, then, that the elements within a set can be permuted at will and the set remain identical? The answer is that the set is built up mereologically not out of elements but out of singletons, and the latter are – according to standard philosophical conceptions of the nature of sets (which are in turn inspired by the axioms of set theory itself) – mere, homeless some-things , outside time and space. The singleton operator has the effect of stripping away the various sorts of linkages which obtain between the objects to which it is applied and also of setting them apart from their surroundings and from time and change.

EXCERPT #DGN5CX p. 9
  4 Lewis, Parts of Classes , 31.

EXCERPT #D6KURP p. 10

EXCERPT #QHJY3L p. 10
  Partitions are, now, distinct from sets however (and from mereological fusions) also in this: that they are not constituted out of (not made or built out of) the objects that are located in their cells. Rather, they belong to the level of our theorizing and classifying activity. Like maps, they can in an easily understandable fashion remain the same even though the objects towards which they are directed are subject to constant change. Moreover, it is no less easily understandable how distinct partitions can arise in relation to one and the same initial stock of objects. Some partitions are like sets in the sense that they will apprehend the objects which are located in their respective cells independently of order or arrangement or linkage or time. Other partitions, however, inherit from mereology the ability to comprehend their objects in ways which map the different kinds of relations that obtain among them. The cells in such partitions project their objects not in isolation, but rather in tandem with other objects located in related cells within the same partition. Such partitions will apply to pairs of entities only in reflection of the specific relations in which they stand to each other. John and Mary, before they wed, are not, but through marriage they become, located in the two-celled partition married pair . Yet other two-celled partitions, for example the partition capturing the relation between the two terms of an ordered pair, apply to pairs of objects only in reflection of our ways of conceiving them. A three-celled partition is needed to capture the way in which, in an action of kissing or congratulating, two objects become bound together by a third object – a relational event – in which the one occurs as agent, the other as patient.

EXCERPT #NA855T p. 10
  Partitions, as we have seen, have built-in granularity. The theory of partitions is thus unlike both mereology and set theory in that it has a direct and natural way of dealing with the fact that three-dimensional objects such as cats and human beings are many, but almost one. 5 It thus also, again unlike both mereology and set theory, promises to offer a way to do justice to the ways in which three-dimensional objects such as cats or human beings can preserve their identity from one moment to the next even in spite of gaining and losing parts. A human organism is at any given time a certain family of distinct aggregates of atoms, molecules, and cells, but we are not in general aware of this fact

EXCERPT #BCHN43 p. 10
  5 Compare with D.K. Lewis, "Many, but Almost One," in Ontology, Causality and Mind: Essays in Honour of D.M. Armstrong , ed. J. Bacon, K. Campbell and L. Reinhardt (Cambridge: Cambridge University Press, 1993), 23-38.

EXCERPT #SVPX74 p. 11

EXCERPT #YW6E98 p. 11
  because, as we saw, the differences between the latter are traced over in our standard ways of dealing with them.

EXCERPT #EMHGZD p. 11
  Partition theory does not, in and of itself, give an account of what transtemporal identity – for example the transtemporal identity of human organisms – is. Rather it tells us what is involved when cognitive subjects track identity through the sorts of changes by which human (and of course other) organisms are affected. If, however, the transtemporal identity of organisms is in part a function of the types of (small) changes by which they are affected from moment to moment, then the framework of partitions may provide a new path towards resolving the problem of what it is that makes it true that organism a at time t 1 is identical to organism b at time t 2 , namely via an accounting of the sorts of (small) changes which affect (and which do not affect) the identity of the entity in question.

EXCERPT #HVXS7D p. 11
  The theory of partitions can do justice also, in a way that is precluded for set theory, to the phenomena of time and change. This is because, where sets are abstract entities existing outside time and space, partitions are human constructions which can be applied to the very same domain of objects at different points in time. In this way, we can construct entire histories of partitions tracking the temporal evolution of (for example) physical systems of different sorts at different levels of granularity. 6 In this way also we can use the machinery of partitions to represent not only the way objects are related together at a time, but also how they evolve from one time to the next.

SECTION #CB54XA 6. A Coda on Realism and the Objectivity of Truth

EXCERPT #3KQGTA p. 11
  That scattered portion of the world that is made up of rabbits, that which is made up of rabbit stages, and that which is made up of undetached rabbit parts, are all three just the same scattered portion of the world. The only difference, as Quine sees the matter, “is in how you slice it.” 7 What Quine does not recognize, however, is that there are two sorts of slicings: the bona fide and the fiat. 8 Bona fide slicings reflect boundaries existing in nature, for example the boundaries of tennis balls or planets. Fiat slicings reflect boundaries which we

EXCERPT #JRPLC9 p. 11
  6 See Smith and Brogaard, “Quantum Mereotopology.”

EXCERPT #7UCEKT p. 11
  7 W.V.O. Quine, “Ontological Relativity,” in Ontological Relativity and Other Essays (New York: Columbia University Press), 32.

EXCERPT #9YJ8YS p. 11
  8 See the forthcoming B. Smith, “Fiat Objects,” Topoi (2001).

EXCERPT #ZMN5FZ p. 12

EXCERPT #AGNM5H p. 12
  ourselves have introduced into reality through our more or less arbitrary demarcations, for example the boundaries of census tracts or tax brackets. Both kinds of slicing are represented in our partitions. For even though the cells of the latter are entirely fiat in nature – they are artefacts of our cognitive activities – some of them are coordinated with bona fide demarcations on the side of objects in reality.

EXCERPT #AH92HD p. 12
  Different philosophers have different views as to which slicings are bona fide and which are fiat. Quine himself holds a view which implies that the metaphysical distinctions between continuants, stages and undetached parts belong in the realm of fiat slicings. Since reference is behaviorally inscrutable as concerns such distinctions – this is the moral of Quine’s ‘gavagai’ fable in Word and Object – Quine concludes that there is no fact of the matter which they might reflect – no fact of the matter on the side of the objects themselves as these exist before we address them in our language.

EXCERPT #5NTVLT p. 12
  Notice that this is not an epistemological thesis. Quine must hold that even an omniscient being would be in the same predicament as you or me as concerns referential inscrutability. That is, he must hold that continuants, parts and stages do not differ from each other in virtue of any corresponding (bona fide) differences on the side of the entities in reality. Rather they differ from each other in the way in which, when asked to count the number of objects in the fruit bowl, you can say either: one orange, or: two orange-halves, or: four orange-quarters, and so on – and you will give the right answer in every case. The distinctions in question are merely the products of our distinct slicings (our purely fiat partitions) of one and the same reality.

EXCERPT #XMEHXC p. 12
  But note that Quine is being too hasty when he asserts that there is no fact of the matter as concerns the reality to which we are related when using singular referring terms. For it follows from his own doctrine that it is a fact of the matter that this reality is intrinsically undifferentiated as far as the mentioned metaphysical distinctions are concerned. This is just the other side of the coin from the fact that the corresponding boundaries are entirely fiat in nature.

EXCERPT #ABCW8A p. 12
  Quine indeed comes close to a view according to which all boundaries on the side of objects in reality are of the fiat sort. Objects of reference, for him, can comprise any content of some portion of space time, however heterogeneous, disconnected and gerrymandered this may be. This is not so for Lewis, on the other hand, whose perspective on these matters we find more congenial:

EXCERPT #LWYBP5 p. 13

EXCERPT #ZL8Y37 p. 13
  Among all the countless things and classes that there are, most are miscellaneous, gerrymandered, ill-demarcated. Only an elite minority are carved at the joints, so that their boundaries are established by objective sameness and difference in nature. Only these elite things and classes are eligible to serve as referents. 9

EXCERPT #MES43X p. 13
  Elite things and classes are in our terms the things and classes captured by those partitions which track bona fide boundaries and relations in reality. It is the job of fundamental science and of fundamental metaphysics to move us in the direction of partitions of this sort. Even when scientists and philosophers have completed this job, however, there will still be room for partitions of the lesser sort, partitions which track boundaries – for example the boundary of Quebec, of Tibbles' tale, or of the No Smoking Section of your favorite restaurant – which exist only as a result of our acts of fiat. 10

EXCERPT #KE2WJK p. 13
  9 D. Lewis, "Putnam's Paradox," Australasian Journal of Philosophy 62 (1984): 227.

EXCERPT #9H5MHV p. 13
  10 Thanks go to Berit Brogaard for invaluable assistance in the working out of the ideas in this paper. Thanks are due also to the National Science Foundation, which supported work on the theory of partitions under Research Grant BCS-9975557: "Geographic Categories: An Ontological Investigation" and to the American Philosophical Society, for the award of a Sabbatical Fellowship.

DOCUMENT #XYERFR
Carving Up Reality

SECTION #MB4VPZ 2. The Granularity Problem Posed

EXCERPT #M3Y44A p. 2
  If, however, partitions are effected not in any simple geographical way, but rather in such a way as to be marked by a certain granularity, then this brings a serious problem for our standard views of how reference and perception work – a new variant on older problems connected with intensionality, opacity and substitution. The problem turns on the fact that the relation of a part to its whole is transitive. Consider the question of what Mary sees when she sees John raising his hand. The following must all simultaneously be true:

EXCERPT #8AC2UK p. 2
  A. The molecules inside John are parts of John. B. John is part of what Mary sees. C. The molecules inside John are not a part of what Mary sees.

EXCERPT #JZBT8H p. 2
  These sentences cannot be simultaneously true in the presence of the (independently attractive-seeming) principle of the transitivity of parthood:

EXCERPT #3LGK75 p. 2
  D. If x is part of y , and y is part of z , then x is part of z .

EXCERPT #54JD7K p. 2
  Counterpart triads can be constructed in regard to a host of other types of entities: truthmakers, facts, states of affairs, situations, surfaces, aspects, pluralities, shadows, visual fields, persons, Husserl's 'noemata', Kant's 'phenomenal world', Fine's 'qua objects', and so on. Thus, for example, we might have:

EXCERPT #TSJA7B p. 2
  A'. The molecules inside John are parts of John. B'. John is part of what makes it true that John is raising his hand. C'. The molecules inside John are not a part of what makes it true that John is raising his hand.

EXCERPT #9VTGPV p. 2
  Clearly if we are to do justice ontologically to the facts of granularity, then some way must be found to explain how the sentences in each of these triads can be simultaneously true, and this means that some way must be found to block the transitivity of parthood (thus for example to block the move from 'x is visible' and 'y is part of x' to: 'y is visible'). We can formulate an analogous triad also in relation to entire domains, for example in relation to the domain of what might be called 'common-sense reality':

EXCERPT #3E2QQG p. 3

EXCERPT #NMDZC3 p. 3
  A". The molecules inside John are parts of John.

EXCERPT #QHPLRL p. 3
  B". John is part of common-sense reality.

EXCERPT #MYVLUY p. 3
  C". The molecules inside John are not a part of common-sense reality.

EXCERPT #L6GT3Q p. 3
  One way to resolve the problem is to refuse to take expressions like 'fact,' 'sense datum,' 'what Mary sees,' or 'common-sense reality' seriously as referring to special sorts of entities. One is then simply not allowed to ask, for example, whether molecules of paint are or are not a part of the sense data which John sees when he focuses on a painted wall. To suppose that a part-whole relation might obtain (or not obtain) here is to be guilty of what some like to call a 'category mistake'.

EXCERPT #V6WMF3 p. 3
  Those interested in ontology will however persist in raising such questions nonetheless, which means that in regard to some, at least, of the types of entities mentioned, they will take such entities ontologically seriously. Sentences involving category mistakes (for example 'cardinal numbers are green') they will classify simply as unproblematic falsehoods. One standard ontological approach utilizes the phrase 'under a description' or some comparable locution. The idea is that it can be the case that some given molecule is part of John under one description (for example: physical body ), but that it is not a part of John under some other description (for example: object visible with the naked eye ). Again, however, ontological persistence reveals a problem with such approaches. For if John under these different descriptions is indeed one and the same entity, then he thereby also has, under each description, all the same parts. If, on the other hand, John under this description is a different entity from John under that description, then we are still in need of an account of how this difference is to be understood, and this brings us back to the puzzling triad with which we again.

EXCERPT #52WNNT p. 3
  Another popular starting point for the resolution of our puzzle rests on using set theory as a means of blocking the principle D. of the transitivity of parthood. The set-membership relationship is after all not transitive. But to use set theory as a means of blocking transitivity brings too great a cost. For if set theory is taken realistically, then this forces us to identify Urelemente – elements of sets which are not themselves sets – from out of which the larger worldly structures which concern us would be constructed by set-theoretical means. But what would such elements be in the case of a complex event such as John raising his hand ? And even if appropriate elements – ultimate sub-atomic particles, for example – did present themselves for purposes of set-theoretic reconstruction, problems would still arise because we would then find that our ontology is cluttered with multiple copies of reconstructed objects existing at different times and at different levels of granularity (for example, John as set of atoms, John as set of molecules, John as set of cells; this set of atoms at a time when it constitutes John, this same set of atoms at a time when its elements are scattered to the four winds; and so on). This problem of supernumerary copies does not arise for standard theories of part and whole, since the mereological sums of the atoms, molecules, cells, and so forth constituting John at some given time are all one and the same object. It is precisely this, however, which makes the mereological approach susceptible to the puzzle captured in our triad. Mereology as an instrument of ontology is, furthermore, in no better a position than set theory when it comes to the problem of doing justice to the fact that John preserves his identity from one moment to the next even in spite of the fact that he gains and loses parts.

EXCERPT #J96BN7 p. 4

DOCUMENT #XYERFR
Carving Up Reality

SECTION #8HR7LJ 3. The Granularity Problem Solved

EXCERPT #ERFHR9 p. 4
  Consider what happens when you observe a chessboard. You are working with a partition of the world into that, in the region of the chessboard, which you are focusing on, and that which is traced over. Your focus brings with it, again, a certain granularity: you are interested, not in the atoms or molecules within the board and its pieces, but rather only in the board and the pieces themselves. Moreover, you are interested in the latter not as constituting a mere list, or set, but rather as they exist within a certain arrangement. The board is divided into squares. In some of these cells pieces of specific kinds are located.

EXCERPT #LVGCLF p. 4
  To understand what is going on here, we need to focus in more detail on the notion of a partition and on the associated notion of cell. The first thing that we need to recognize is that partitions have their granularity built in, as it were, from the very start. An administrative map of France depicting its 91 départements or its 311 arrondissements provides a close approximation to a partition in the sense we have in mind. Such a map is the result of applying a certain coarse- or fine-grained grid of cells – the minimal units of the partition – to a certain portion of reality.

EXCERPT #EUPJEZ p. 5

EXCERPT #2G3478 p. 5
  A partition is the ontological analogue of the sort of labeled grid we might find in a large post office or automobile component warehouse. For a partition to do its work, it needs to have cells large enough to contain the objects that are of interest in the portion of reality which concerns us; but at the same time these cells must somehow serve to factor out the details which are of no concern. A partition is accordingly a device for focusing upon what is salient and also for ignoring or masking what is not salient. We can think of it as being laid like a net over whatever is the relevant object-domain, and, like a net or grid (or a latticed window of the type depicted in Renaissance manuals of painting), it is to a large degree transparent. Thus, importantly, it does not in any way change the objects to which it is applied. The sorts of carvings up of reality which are effected through our partitions are comparable, not to those effected by surgeons, but rather to those we find in atlases of surgical anatomy, or indeed in the various tables of categories prepared by Aristotelian philosophers and by Linnaean biologists.

EXCERPT #X94PFG p. 5
  A partition is like a map. It is an artifact of our perceiving, judging, classifying or theorizing activity, and it exists only as a product of the cell boundaries by which it is determined. The reality partitioned, in contrast, is what and where it is, and it has all its parts and moments, independently of any acts of human fiat and in dependently of our efforts to understand it theoretically. Granularity as it has been treated in the above is thus properly at home precisely in the realm of our partitions: granularity pertains not to the objects themselves on the side of reality, but rather to the ways we partition those objects in different sorts of contexts.

EXCERPT #RTEWVS p. 5
  The arrangement of cells in a partition may be purely spatial, as in a map, where the relative positions of neighboring cells are determined by the corresponding positions of those portions of geographic reality to which the cells relate. Or it may be determined by a linear ordering, as for example where partitions are determined via quantitative scales reflecting age cohorts or temperature bands. The arrangement may also be determined in more complex (for example hierarchical) ways, as in the case of a partition determined by biological kinds (for example a multi-level partition of the animals in your local zoo into lions , tigers , spiders , small marsupials , vertebrates , and so on). The partitions which come closest to sets (or to mere lists) are those associated with our uses of proper names, partitions which we are able to project onto reality in such a way that their cells keep track of the corresponding objects in the world as objects that are identical from one moment to the next, and this in spite of the fact that these objects change and that parts are gained and lost.

EXCERPT #G45LEK p. 6

EXCERPT #69MWB5 p. 6
  Complex multidimensional partitions arise through the combination of these different types of demarcations and cell arrangements. A map of the zoo, for example, might indicate not only the places where animals are located but also the sorts and sizes and proper names of the animals which are located in those places.

DOCUMENT #XYERFR
Carving Up Reality

SECTION #CB54XA 6. A Coda on Realism and the Objectivity of Truth

EXCERPT #3KQGTA p. 11
  That scattered portion of the world that is made up of rabbits, that which is made up of rabbit stages, and that which is made up of undetached rabbit parts, are all three just the same scattered portion of the world. The only difference, as Quine sees the matter, “is in how you slice it.” 7 What Quine does not recognize, however, is that there are two sorts of slicings: the bona fide and the fiat. 8 Bona fide slicings reflect boundaries existing in nature, for example the boundaries of tennis balls or planets. Fiat slicings reflect boundaries which we

EXCERPT #JRPLC9 p. 11
  6 See Smith and Brogaard, “Quantum Mereotopology.”

EXCERPT #7UCEKT p. 11
  7 W.V.O. Quine, “Ontological Relativity,” in Ontological Relativity and Other Essays (New York: Columbia University Press), 32.

EXCERPT #9YJ8YS p. 11
  8 See the forthcoming B. Smith, “Fiat Objects,” Topoi (2001).

EXCERPT #ZMN5FZ p. 12

EXCERPT #AGNM5H p. 12
  ourselves have introduced into reality through our more or less arbitrary demarcations, for example the boundaries of census tracts or tax brackets. Both kinds of slicing are represented in our partitions. For even though the cells of the latter are entirely fiat in nature – they are artefacts of our cognitive activities – some of them are coordinated with bona fide demarcations on the side of objects in reality.

EXCERPT #AH92HD p. 12
  Different philosophers have different views as to which slicings are bona fide and which are fiat. Quine himself holds a view which implies that the metaphysical distinctions between continuants, stages and undetached parts belong in the realm of fiat slicings. Since reference is behaviorally inscrutable as concerns such distinctions – this is the moral of Quine’s ‘gavagai’ fable in Word and Object – Quine concludes that there is no fact of the matter which they might reflect – no fact of the matter on the side of the objects themselves as these exist before we address them in our language.

EXCERPT #5NTVLT p. 12
  Notice that this is not an epistemological thesis. Quine must hold that even an omniscient being would be in the same predicament as you or me as concerns referential inscrutability. That is, he must hold that continuants, parts and stages do not differ from each other in virtue of any corresponding (bona fide) differences on the side of the entities in reality. Rather they differ from each other in the way in which, when asked to count the number of objects in the fruit bowl, you can say either: one orange, or: two orange-halves, or: four orange-quarters, and so on – and you will give the right answer in every case. The distinctions in question are merely the products of our distinct slicings (our purely fiat partitions) of one and the same reality.

EXCERPT #XMEHXC p. 12
  But note that Quine is being too hasty when he asserts that there is no fact of the matter as concerns the reality to which we are related when using singular referring terms. For it follows from his own doctrine that it is a fact of the matter that this reality is intrinsically undifferentiated as far as the mentioned metaphysical distinctions are concerned. This is just the other side of the coin from the fact that the corresponding boundaries are entirely fiat in nature.

EXCERPT #ABCW8A p. 12
  Quine indeed comes close to a view according to which all boundaries on the side of objects in reality are of the fiat sort. Objects of reference, for him, can comprise any content of some portion of space time, however heterogeneous, disconnected and gerrymandered this may be. This is not so for Lewis, on the other hand, whose perspective on these matters we find more congenial:

EXCERPT #LWYBP5 p. 13

EXCERPT #ZL8Y37 p. 13
  Among all the countless things and classes that there are, most are miscellaneous, gerrymandered, ill-demarcated. Only an elite minority are carved at the joints, so that their boundaries are established by objective sameness and difference in nature. Only these elite things and classes are eligible to serve as referents. 9

EXCERPT #MES43X p. 13
  Elite things and classes are in our terms the things and classes captured by those partitions which track bona fide boundaries and relations in reality. It is the job of fundamental science and of fundamental metaphysics to move us in the direction of partitions of this sort. Even when scientists and philosophers have completed this job, however, there will still be room for partitions of the lesser sort, partitions which track boundaries – for example the boundary of Quebec, of Tibbles' tale, or of the No Smoking Section of your favorite restaurant – which exist only as a result of our acts of fiat. 10

EXCERPT #KE2WJK p. 13
  9 D. Lewis, "Putnam's Paradox," Australasian Journal of Philosophy 62 (1984): 227.

EXCERPT #9H5MHV p. 13
  10 Thanks go to Berit Brogaard for invaluable assistance in the working out of the ideas in this paper. Thanks are due also to the National Science Foundation, which supported work on the theory of partitions under Research Grant BCS-9975557: "Geographic Categories: An Ontological Investigation" and to the American Philosophical Society, for the award of a Sabbatical Fellowship.

### 48. Tool result: read

DOCUMENT #56MWAA
Environmental Metaphysics

SECTION #A744FG Environmental Metaphysics

EXCERPT #E2GXWR p. 0
  Barry Smith

EXCERPT #YNGEVD p. 0
  Department of Philosophy and Center for Cognitive Science, SUNY Buffalo, NY

EXCERPT #CTG6D6 p. 0
  Achille C. Varzi

EXCERPT #4L9VZX p. 0
  Department of Philosophy, Columbia University, New York, NY

EXCERPT #R6HVYD p. 0
  We propose the beginnings of a general theory of environments, of the parts or regions of space in which organisms live and move. We draw on two sources: on the one hand on recent work on the ontology of space; and on the other hand on work by ecological scientists on concepts such as territory, habitat, and niche.

SECTION #CZ8FBE 1. Environments: Types and Tokens

EXCERPT #PXXSV2 p. 0
  An environment is in first approximation a volume of space; it is a specific habitat, location, or site that is suitable or adequate for given purposes (of foraging, resting, hunting, breeding, nesting, grooming) in the life of an organism or group of organisms. This spatial notion of environment can be drawn closer to biological and ecological science by taking account of the pertinent physical attributes realized within given spatial regions. Each type of organism is associated with a certain array of environmental conditions, for example: degree of slope, exposure to sunlight, soil fertility, foliage density, size, proximity and type of predators, and so on. Following Hutchinson [6], we can conceive this array of conditions as determining a hypervolume in an abstract many-dimensional space. Every point or region in this hypervolume corresponds to a niche in the technical ecological sense: a state of the environment which permits the members of a given species to exist indefinitely.

EXCERPT #Y8GJ8U p. 0
  Biologists, of course, are interested, not in individual organisms and their environments, but rather in statistical laws and regularities, and thus also they are interested in genotypes and phenotypes rather than in genotokens and phenotokens. For the purposes of biological theorizing organisms are intersubstitutable: one phenotoken is as good, or as bad, as any other, in reflection of the fact that it is on the level of statistical regularities that adaptation and selection occur. Biologists are interested similarly in niche types and not in niche tokens. It is niche types which are at work for example in such general laws as Grinnell’s competitive exclusion principle [4] (which states that, in competition between species that seek the same ecological niche, one species survives while the other expires). And it is niche types which are at work in Hutchinson’s distinction between the fundamental and the realized niche, the former being defined as the total multi-dimensional array of environmental conditions under which a given species could live and replace itself, the latter as that portion of this total array which is actually suited for that species at a given time, for example because competition excludes it from other portions.

EXCERPT #YLWZBS p. 0

EXCERPT #SND6AQ p. 0

EXCERPT #MZHSC4 p. 1
  The ecometaphysician will insist, however, that there is no type without a token, and that tokens, whether of organisms or of environments, are in any case of considerable interest in their own right. In our paper “The Niche” [12], accordingly, we sketched a framework within which token niches (and, more generally, token environments) can be understood as the projections of corresponding niche types into the volumes of space occupied by given organisms. A niche in this token sense is in every case the niche of some organism or group of organisms of some given type, and in our account the relation of fit between a token niche and its tenant is essentially a formal relation—a relation capable of being specified with the aid of basic concepts of mereology, topology, and the theory of location [2]. In the present paper we extend this account by providing more detailed analysis of the internal structures of token niches and of how this determines the causal relations between niches and their surroundings.

SECTION #KU6JHE 2. The Structure of Niches

EXCERPT #FSNTG4 p. 1
  Consider the bear in its cave (Figure 1). There is manifested here what we might think of as a double hole structure. In the center of this structure is the bear itself, which, by displacing air, at one and the same time creates and occupies a central hole in the region of space that it occupies—a hole that is precisely the right size and shape to be occupied by this very bear. (On holes and their fillers see [1].) Surrounding the bear is a medium —in this case air—which allows the bear to move and breathe and to leave and enter the cave. Surrounding this medium in whole or in part is an enclosing structure, or what we shall call a retainer , which in the present case is constituted by the walls, roof, and floor of the cave. We can accordingly think of the medium as filling a second, larger hole—an environing hole —that is exactly as large as the interior of the cave, minus the bear.

EXCERPT #Q8E2XH p. 1

EXCERPT #CMRMJ2 p. 2
  The diagram illustrates the concept of a 'double hole structure'. It features three nested, irregular shapes. The outermost shape is gray and labeled 'Retainer (a boundary of some surrounding structure)'. Inside this is a white shape labeled 'Medium (filling the environing hole)'. Within the white shape is a black silhouette of a bear, labeled 'Tenant (occupying the central hole)'. Three leader lines connect the text labels to their respective shapes in the diagram. Diagram illustrating the double hole structure instantiated by the bear in its cave. The diagram shows a black silhouette of a bear (the Tenant) inside a white irregular shape (the Medium), which is itself inside a larger gray irregular shape (the Retainer). Labels with leader lines point to each component: Retainer (a boundary of some surrounding structure), Medium (filling the environing hole), and Tenant (occupying the central hole).

EXCERPT #EU87D3 p. 2
  Figure 1. The double hole structure instantiated by the bear in its cave.

EXCERPT #SFHXFK p. 2
  Most token niches, we submit, exhibit a double hole structure of this sort. The medium of a niche is what results when a given spatial region (of given altitude, orientation, exposure, etc.) comprehends air or water molecules or some other stuff which instantiate environmental properties (of temperature, pressure, viscosity, etc.) which fall within the threshold values determined for the organisms of the corresponding type. And the retainer contributes a physical demarcation between the medium and the outer world, blocking or channeling different types of causal flows and thereby bringing it about that a certain niche type is instantiated in the relevant region of space.

SECTION #ES8596 3. The Medium for Life

EXCERPT #VFZUH3 p. 2
  The medium is that into which the tenant fits—it is that which occupies the environing hole of the niche. Media are, in our technical sense, necessarily such that they exist only within the context of niches. Indeed, a body of air or water constitutes a medium in this technical sense only relative to a given type of niche, and thus only relative to a given type of organism. It is the type of organism which fixes the relevant hypervolume of environmental properties which the medium exemplifies.

EXCERPT #Q6T5CQ p. 2

EXCERPT #44WS97 p. 3
  Consider, now, what happens when a tenant leaves its niche. It seems to be a characteristic feature of such cases that the gap left by the tenant, or by any other object that is removed from the niche, is filled immediately by the surrounding medium. Modulo the elasticity of the retainer (consider the kangaroo joey leaving the pouch of its mother), this is an operational test for being a niche medium. If Luigi is buried in a hole filled with concrete, the latter is not a medium, because it does not pass our operational test. Luigi, accordingly, is not in a niche. If, as we are arguing, every niche has a medium of the appropriate sort, then there are for this reason no niches in cases where inanimate bodies of dense matter are housed within immediately surrounding bodies of dense matter (as Michelangelo's David , for example, was once housed inside a solid block of stone). The operational test is, on the other hand, complied with in the case of, say, a valve in a piston or a jewel in a jewel box. In such cases we are still able to apply the basic niche concept even though the pertinent tenant is not alive.

EXCERPT #LG8NWN p. 3
  Typical examples of media are air, smoke (and gases in general), water (and liquids in general). Water—in contrast to air—may serve in some circumstances as medium and in other circumstances as (partial) retainer, for example as the horizontal underlying support for the niches of small flies above the surface of a lake. Rarely, however, will the medium of a niche be constituted in homogeneous fashion of a single stuff. Rather, terrestrial token niches will standardly involve mixed media, sometimes hugely diverse combinations of air plus water plus other nutrients and impurities, including radioactive impurities, as well as vitamins, amino acids, salts, and sugars in which organisms of different sorts, from protozoa to large mammals, live.

EXCERPT #7GQ7JR p. 3
  Every medium is in fact a mixed medium in the sense that every medium involves, in addition to particles of matter, some intervening empty space. A medium is constituted out of space and matter in such a way that the tenant may move freely within it. And we shall suppose that the same medium may be constituted out of different matter at different times (as with every material body, there may be a turnover of particles). Note that we speak here of 'constitution' rather than of 'identity'. This allows us to remain neutral with regard to the question whether the medium is to be identified with the relevant portion of space and matter or whether the same space and matter may constitute two or more distinct media which would then share the same location. (Compare the essays collected in [10].) Consider a small island which supports simultaneously two populations of seed-eating and insect-eating birds. Or consider a mud-dwelling bacterium which shares a location with a sea-bottom-dwelling fish such as a sculpin. The bacteria are sensitive primarily to the viscosity and turbulence of the surrounding medium and are affected hardly at all by the force of gravity. For the sculpin, in contrast, gravity is more important than viscosity and turbulence. If the relation of material constitution is nothing but identity, then we would have to account for cases such as this by conceiving different types of niche as being instantiated by the same token. If, on the other hand, constitution is not identity, then different niche types would have different niche tokens which would be, as it were, superimposed one upon the other.

EXCERPT #EUG5WK p. 3

SECTION #M6WYY6 4. Retainers and Fiat Boundaries

EXCERPT #MLF8TS p. 4
  Given any niche token, then, it is its mixed medium that is at any time the carrier of the properties represented in the corresponding niche type. The job of the retainer is to protect or demarcate the medium and to ensure that it satisfies those properties. In this sense the retainer of a niche functions as a causal barrier, in a way analogous to the skin or hide of an organism. The very geometry of the retainer-medium-tenant configuration is determined by this causal function: the medium surrounds the tenant, and the retainer surrounds the medium demarcating it from the outer world.

EXCERPT #QGG6J4 p. 4
  Not every niche, however, involves a complete demarcation of this sort. Consider once again the niche depicted in Figure 1. Inspection reveals that the enviroing hole in fact has two sorts of boundary: a solid physical boundary, corresponding to the retainer, on the one hand; and what we have elsewhere [13] called a fiat boundary (illustrated by the broken line in Figure 2), on the other. The latter is a boundary which corresponds to no physical discontinuity in the underlying material of the niche in question and to no qualitative heterogeneity in its surroundings. Fiat boundaries of this sort are similar to those which delineate connected body parts (such as your hand and your arm) or geographic features (such as bays within their surrounding seas or seas within surrounding oceans) [11]. In our present case, the fiat boundary at the mouth of the cave supplements an associated retainer in such a way as to form a complete surrounding boundary that is analogous—topologically—to a sphere.

EXCERPT #HHAJK6 p. 4

EXCERPT #WXMA4H p. 5
  A diagram showing a central white, irregularly shaped region. To the left of this region, a dashed vertical line is labeled "Fiat boundary" with a horizontal line pointing to it. To the right of the region, a solid, irregular line is labeled "Physical boundary" with a horizontal line pointing to it. The area between the dashed line and the solid line is shaded light gray. Diagram illustrating two types of boundaries: Fiat boundary and Physical boundary.

EXCERPT #B6UVCJ p. 5
  Figure 2. Two types of boundary.

EXCERPT #YPANUJ p. 5
  Most developed niches (a cave, a shell, a nest, a house) are bound partly by a physical retaining boundary and partly by a fiat boundary of this sort. When the bear leaves its cave or the squirrel leaves its dray, however, then it enters a niche whose physical retainer is a much more heterogeneous structure involving the surfaces of the relevant trees, leaves, meadows, rivers, ice floes, and so forth. There are also cases where the boundary of the medium is entirely of the fiat sort. Consider, for example, a skylark flying high in the sky, or an open ocean fish. Here, too, in certain circumstances we may speak of the bird or the fish as being in a niche, and here, too, we can recognize a double hole structure. However, in such cases the environment hole appears not to be determined or supplemented by solid physical boundaries at all, for there is no relevant solid retaining object. We should rather think of the boundary around the medium of the bird or of the fish as a fiat boundary delineating a bubble-like (often cylindrical) zone or volume of space in which, at any given time, the bird or fish is housed.

EXCERPT #ACSEQ4 p. 5
  Such fiat boundaries are indirect by-products of the behavior patterns of the organisms involved. This means, inter alia , that they are affected by the phenomenon of vagueness. While it may be determinately true of certain regions that they fall within the interior of the niche for the fish, and determinately true of certain other regions that they fall within its exterior, there will standardly be no sharp line which constitutes a single (fiat) boundary of the niche in question. Rather, it may be that we have to deal with whole families of bubble-like nested regions which form dense concentric clusters, each of which might at any given time qualify (perhaps to variable degrees) as the location of the relevant token niche.

EXCERPT #P9ST57 p. 5

SECTION #WMTBK4 5. Security vs. Freedom of Movement

EXCERPT #CTLVZT p. 6
  Organisms of different types and at different stages of their development will embrace different strategies in regard to the demands of security and freedom of movement in their interaction with the outside world. Common plants, for example, enjoy a maximum of protection in the earliest post-germination phases of their existence (when they are underground) and a minimum thereafter, combined with a negligible freedom of (self-moved) movement at every stage. Snails build their own protection in the form of a shell around themselves. And barnacles gain further protection by bonding themselves to a solid surface, thereby sacrificing freedom of movement almost entirely.

EXCERPT #BMEK2Z p. 6
  This suggests a classification of niches according to the type of their exterior boundary and thus according to the degree to which their media are protected by the isolating power of solid niche retainers. We distinguish four main classes, as follows (see Figure 3).

EXCERPT #NVYQJF p. 6
  1. At one extreme we find niches that are fully bounded by a retainer. A niche of this class is an ideal niche from the perspective of protection—a perfect cavity , physically protected in each direction and in relation to each pertinent family of intruders or impurities. Examples are: a closed oyster shell, a submarine, a car, a nuclear clean room facility, an incubating tent. We may include here also niches such as a fine-mesh cage, whose surrounding physical structure, though incomplete in some degree, is sufficiently dense to supply a protective retainer which fully circumscribes the relevant niche. Class 1 niches can be subdivided into those whose retainers offer full protection without access points (a full passive defense, such as that provided by a larval cocoon) and those with defended access points (such as an oyster shell, which must actively keep its shell closed to prevent predators from prying it open). The degree of protection, in turn, will depend on the physical properties of the retainer: the walls of the crocodile's egg, for example, have a higher protective value than the thin membrane which is the zona pellucida of the mammalian zygote.

EXCERPT #ZHZVTC p. 6
  2. Most niches are, like the bear's cave, not fully bounded, but rather bounded only to a certain degree. Examples are: a kangaroo-pouch, a nest, a hive, a cabriolet. All of these are niches which, geometrically, do not involve closed cavities but rather natural or artificial hollows within their respective environments, with a fiat boundary marking (more or less vaguely) the opening. Nevertheless they are for a range of different reasons fairly robust from the perspective of protection. Trenches (in battlefields) are of this kind. We may further include in this category niches with multiple openings— tunnel niches—such as a person’s stomach (which can be a niche for a parasite) or a path cleared in the jungle (which can be a niche for hunters).

EXCERPT #PLVDRM p. 6

EXCERPT #ARGKDK p. 7
  3. Some niches are bounded by a partial retainer which offers no or a very low degree of protection—by a floor, for example, or by a single wall. This is the case of the niche around two people chatting on the sidewalk (bounded by the pavement) or the niche of the oxpecker removing ticks from the back of an African rhinoceros (bounded by a part of the rhinoceros’s hide). We may include in this category also niches which are bounded on two sides: consider a pedestrian with an umbrella.

EXCERPT #UJ7SG4 p. 7
  4. Finally, at the other extreme of the continuum between bound and free we find niches which lack a retainer altogether. Such niches are bubble-like zones in the relevant region of space, as in the case of the niche of the open ocean fish. This class of niche, too, may manifest a range of different topologies. When a falcon is flying in the sky circling above the area where its prey is to be found, the niche of the falcon is its orbit, a torus-shaped region that is bordered, again, by boundaries of the fiat sort.

EXCERPT #ZXF3JH p. 7
  The figure consists of four diagrams labeled 1 through 4, arranged horizontally. Diagram 1 is a circle with a solid line boundary. Diagram 2 is a semi-circle with a solid line boundary. Diagram 3 is a semi-circle with a dashed line boundary. Diagram 4 is a circle with a dashed line boundary. Figure 3: Four diagrams illustrating basic niche classes. 1: A circle with a solid line boundary. 2: A semi-circle with a solid line boundary. 3: A semi-circle with a dashed line boundary. 4: A circle with a dashed line boundary.

EXCERPT #24UKBL p. 7
  Figure 3. The four basic niche classes (seen from the side). A solid line indicates a physical retainer; dotted lines indicate fiat boundaries.

EXCERPT #HZEJ4Z p. 7
  As will be clear from the examples considered, our classification is a simplification of the range of cases actually realized in the three-dimensional world. It is simplified not least in that it does not do justice to the ways in which the physical boundaries of niches—particularly of higher organisms—may involve mixed retainers, which is to say retainers blocking or channeling causal flows of different types. Thus for example both walls and windows may be part of a single retainer. Often, a niche of class 2 can be transformed into a niche of class 1 by adding a plug- or door-like structure or by augmenting the surroundings in such a way as to replace all fiat boundaries by boundaries of the physical sort. More generally, one can move along the continuum by adding or removing portions of the relevant retainer. Thus, niches of classes 2 and 3 are topologically equivalent, but they differ from the perspective of protection. As we saw, the freer the niche, the easier it is for the tenant to move out of it (for example when fleeing from predators).

EXCERPT #VTHFCW p. 7

EXCERPT #R9PPYY p. 8
  We may further subclassify niches of classes 1 through 3 into those which are stationary (a larval chamber; a rabbit hole; a meadow) and those which are mobile (a womb; a snail's shell; the back of a rhinoceros). It seems however that class 4 niches can only be stationary: in the absence of a retainer there is no mechanism whereby the medium would follow the tenant (so that the niche would be as it were dragged along with the tenant) as the latter moves from place to place. Hence with each step the organism must reconstitute a new medium for itself in a process which will standardly occur spontaneously, as in the case of the fish in the ocean or the bird in the sky.

SECTION #WDUMZA 6. Niche Construction

EXCERPT #JCB8VC p. 8
  The history of evolution is, in part, a history of the passage from organisms with very simple (often to a significant degree fiat) niches, which arise automatically in virtue of the actions of the organisms in question, to organisms with complex, physically walled niches which reflect the hard work of construction of materially dense retainers of appropriate types. Niches of the latter sort have the advantage that they can survive for longer or shorter periods even in the absence of a tenant. Moreover, their greater survival-capacity, sometimes extending across generations, can justify the investment of ever greater quantities of energy and resources for the purposes of niche-embellishment.

EXCERPT #CFY5L5 p. 8
  Niches thus arise in many cases as a result of symbiosis between organisms and the tracts of the environment which they occupy. This is especially true in the case of niches of classes 1 and 2, that is, niches with a physically protecting retainer. In such cases, the building of a niche (what some call "ecosystem engineering" [8]) is a complex process that typically involves activities and metabolic processes through which an organism or population modifies the environment. This process involves changing properties of the surrounding environment—as for example when animals build houses and nests. They may then work hard to improve or repair their niches, in relation both to media (as when you turn up the heating in your tent) and retainers (as when you mend the roof of your house). We can in this light then distinguish intuitively between felicitous niches, within which organisms flourish, and critical niches, within which organisms fail to flourish, sometimes catastrophically. A niche is felicitous if, and only if, for every dimension of the relevant hypervolume the relevant variables are within the threshold values.

EXCERPT #LYEL2W p. 8

EXCERPT #7X8AHB p. 9
  Constructing a niche typically involves the building of artefacts, as when a bird builds a nest or people build houses. In many cases, however, the niche is not an artefact—not a new, positive object in its own right, but rather merely the modification of a pre-existing habitat, as when a worm creates a wormhole or an insect chooses a water-filled cavity as site for oviposition [7]. The case of plants is somewhat intermediate between these two. The niche of a plant is the result of a continuous process which changes relevant environmental factors such as exposure to sunlight and the chemical composition of the soil, while at the same time taking advantage of the solid and enduring retaining structure which this soil provides [3, 5].

EXCERPT #BUSFGZ p. 9
  The theory of the construction and maintenance of niches is of more than merely philosophical significance; it is important also for evolutionary theory. Recent work suggests that niche construction may result in selective processes that outweigh other sources of selection, sometimes to the point of generating novel or unusual evolutionary outcomes. Some ant and termite species, for instance, have developed the habit of plugging the entrances to their nests at night in order to regulate temperature. It has also been argued that niche construction may influence the genetic variation in a population. Adaptation, under such conditions, ceases to be a one-way process determined by environmentally imposed problems and becomes a two-way process of natural selection and concomitant environmental modification [9].

SECTION #A4NTER 7. From Ecometaphysics to Environmental Ethics

EXCERPT #HMHJM9 p. 9
  The theory outlined above is designed, not as a substitute for biological science, but rather as a contribution to its ontological foundations. It might be conceived as analogous to set theory as a theory of the ways in which mathematical structures—above all structures designed for use in physics— relate to concrete objects in reality. Thus the theory is not concerned with the task of formulating laws or regularities of a biological sort, for example via averaging or other quantitative techniques. Rather, it deals in ontological principles to the effect that, for example, there is no niche without a medium, there is no medium without a tenant, and so on. Thus also it deals with aspects of the environments in which organisms live which are so fundamental (or so trivial) that biological science has tended to ignore them. Such a treatment of the ontology of environments may be of importance in many different areas. Theories in ethics, for example, have in many cases rested on some developed ontological conception of the bearers of ethical significance, for example in the form of a metaphysics of persons or communities, or of a theory of actions or motives. Current developments in the realm of environmental ethics are we believe in need of a similar metaphysical explication of the central category of environment and of the associated organism–environment relationship. Only then, we would argue, will philosophers in this field be in a position where they can raise questions concerning the ethical significance of such formations in a correspondingly systematic framework.

EXCERPT #BBR2EU p. 9

SECTION #YCMYCD Acknowledgments

EXCERPT #THD9DZ p. 10
  This material is based upon work supported by the National Science Foundation under Grant No. BCS-9975557, which is gratefully acknowledged. Thanks are due also to David Mark for helpful comments.

SECTION #WENWXR References

EXCERPT #QHMU6N p. 10
  1. Casati, R., and Varzi, A. C., 1994, Holes and Other Superficialities , Cambridge, MA, and London: MIT Press. 2. Casati, R., and Varzi, A. C., 1999, Parts and Places: The Structures of Spatial Representation , Cambridge, MA, and London: MIT Press. 3. Ellis, S., and Mellor, A., 1995, Soils and Environment , London: Routledge. 4. Grinnell, J., 1917, 'The Niche-Relationships of the California Thrasher', Auk 34: 427–433. 5. Holmgren, M., Scheffer, M., and Huston, M.A., 1997, 'The Interplay of Facilitation and Competition in Plant Communities', Ecology 78: 1966–1975. 6. Hutchinson, G. E., 1978, An Introduction to Population Ecology , New Haven: Yale University Press. 7. Jaenike, J., 1982, 'Environmental Modification of Oviposition Behaviour in Drosophila ', American Naturalist 119: 784–802.

EXCERPT #MWFHL4 p. 10

EXCERPT #WB6P2W p. 11
  8. Jones, C. G., Lawton, J. H., and Shachak, M., 1997, 'Positive and Negative Effects of Organisms as Physical Ecosystem Engineers', Ecology 78: 1946–1957. 9. Laland, K. N., Odling-Smee, J., and Feldman, M. W., 1999, 'Niche Construction, Biological Evolution and Cultural Change', Behavioral and Brain Sciences 23 (in press). 10. Rea, M. (ed.), 1997, Material Constitution. A Reader , Lanham: Rowman & Littlefield. 11. Smith, B., 1995, 'On Drawing Lines on a Map', in A. U. Frank and W. Kuhn (eds.), Spatial Information Theory. A Theoretical Basis for GIS , Berlin and Heidelberg: Springer-Verlag, pp. 475–84. 12. Smith, B., and Varzi, A. C., 1999, 'The Niche', Noûs 33, 214–238. 13. Smith, B., and Varzi, A. C., 2000, 'Fiat and Bona Fide Boundaries', Philosophy and Phenomenological Research 60, in press.

EXCERPT #UME5JE p. 11

DOCUMENT #56MWAA
Environmental Metaphysics

SECTION #CZ8FBE 1. Environments: Types and Tokens

EXCERPT #PXXSV2 p. 0
  An environment is in first approximation a volume of space; it is a specific habitat, location, or site that is suitable or adequate for given purposes (of foraging, resting, hunting, breeding, nesting, grooming) in the life of an organism or group of organisms. This spatial notion of environment can be drawn closer to biological and ecological science by taking account of the pertinent physical attributes realized within given spatial regions. Each type of organism is associated with a certain array of environmental conditions, for example: degree of slope, exposure to sunlight, soil fertility, foliage density, size, proximity and type of predators, and so on. Following Hutchinson [6], we can conceive this array of conditions as determining a hypervolume in an abstract many-dimensional space. Every point or region in this hypervolume corresponds to a niche in the technical ecological sense: a state of the environment which permits the members of a given species to exist indefinitely.

EXCERPT #Y8GJ8U p. 0
  Biologists, of course, are interested, not in individual organisms and their environments, but rather in statistical laws and regularities, and thus also they are interested in genotypes and phenotypes rather than in genotokens and phenotokens. For the purposes of biological theorizing organisms are intersubstitutable: one phenotoken is as good, or as bad, as any other, in reflection of the fact that it is on the level of statistical regularities that adaptation and selection occur. Biologists are interested similarly in niche types and not in niche tokens. It is niche types which are at work for example in such general laws as Grinnell’s competitive exclusion principle [4] (which states that, in competition between species that seek the same ecological niche, one species survives while the other expires). And it is niche types which are at work in Hutchinson’s distinction between the fundamental and the realized niche, the former being defined as the total multi-dimensional array of environmental conditions under which a given species could live and replace itself, the latter as that portion of this total array which is actually suited for that species at a given time, for example because competition excludes it from other portions.

EXCERPT #YLWZBS p. 0

EXCERPT #SND6AQ p. 0

EXCERPT #MZHSC4 p. 1
  The ecometaphysician will insist, however, that there is no type without a token, and that tokens, whether of organisms or of environments, are in any case of considerable interest in their own right. In our paper “The Niche” [12], accordingly, we sketched a framework within which token niches (and, more generally, token environments) can be understood as the projections of corresponding niche types into the volumes of space occupied by given organisms. A niche in this token sense is in every case the niche of some organism or group of organisms of some given type, and in our account the relation of fit between a token niche and its tenant is essentially a formal relation—a relation capable of being specified with the aid of basic concepts of mereology, topology, and the theory of location [2]. In the present paper we extend this account by providing more detailed analysis of the internal structures of token niches and of how this determines the causal relations between niches and their surroundings.

DOCUMENT #56MWAA
Environmental Metaphysics

SECTION #A4NTER 7. From Ecometaphysics to Environmental Ethics

EXCERPT #HMHJM9 p. 9
  The theory outlined above is designed, not as a substitute for biological science, but rather as a contribution to its ontological foundations. It might be conceived as analogous to set theory as a theory of the ways in which mathematical structures—above all structures designed for use in physics— relate to concrete objects in reality. Thus the theory is not concerned with the task of formulating laws or regularities of a biological sort, for example via averaging or other quantitative techniques. Rather, it deals in ontological principles to the effect that, for example, there is no niche without a medium, there is no medium without a tenant, and so on. Thus also it deals with aspects of the environments in which organisms live which are so fundamental (or so trivial) that biological science has tended to ignore them. Such a treatment of the ontology of environments may be of importance in many different areas. Theories in ethics, for example, have in many cases rested on some developed ontological conception of the bearers of ethical significance, for example in the form of a metaphysics of persons or communities, or of a theory of actions or motives. Current developments in the realm of environmental ethics are we believe in need of a similar metaphysical explication of the central category of environment and of the associated organism–environment relationship. Only then, we would argue, will philosophers in this field be in a position where they can raise questions concerning the ethical significance of such formations in a correspondingly systematic framework.

EXCERPT #BBR2EU p. 9

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DOCUMENT #7YZU95
Boundaries: An Essay in Mereotopology

SECTION #G3GGCD Introduction

EXCERPT #3T5HYF p. 0
  Of Chisholm's many signal contributions to analytic metaphysics, perhaps the most important is his treatment of boundaries, a category of entity that has been neglected, to say the least, in the history of ontology. We can gain some preliminary idea of the sorts of problems which the Chisholmian ontology of boundaries is designed to solve, if we consider the following Zeno-inspired thought-experiment.

EXCERPT #3S4XR2 p. 0
  We are to imagine ourselves proceeding along a line through the middle of a disk that is divided into two precisely symmetrical segments, one of which is red, the other green, and that we move continuously from the red to the green segment. What happens as we pass the boundary between the two? Do we pass through a last point p_1 that is red and a first point p_2 that is green? Clearly not, given the density of every continuum; for then we should have to admit an indefinite number of further points between p_1 and p_2 which would somehow have no color. To acknowledge the existence of just one of p_1 and p_2 but not the other, however, as is dictated by the standard mathematical treatment of the continuum, would be to countenance a peculiar privileging of one of the two segments over the other, and such an unmotivated asymmetry can surely be rejected as a contravention of the principle of sufficient reason.

EXCERPT #9CZQ5P p. 0
  1 Early drafts of this essay were prepared as part of the project "Formal Ontology and the philosophical Foundations of Artificial Intelligence Research" of the Swiss National Foundation (SNF). These drafts were presented at workshops in Padua and Hamburg in 1993 and 1994. My thanks go especially to Carola Eschenbach and I am grateful also to Roberto Casati, Nicola Guarino, Christopher Habel, Wolfgang Heydrich, Barbara Morawska, Mark Textor, Achille Varzi, Graham White and Wojciech Zelaniec for helpful comments, and also to the Alexander von Humboldt-Stiftung for generous support.

EXCERPT #TYZHFB p. 0

EXCERPT #REX26R p. 1
  Perhaps, then, the line on which we move is colorless at the point where it crosses from one segment into the other. The two segments would then be analogous to open intervals in the set-theoretic sense. One might seek support for this idea by reflecting that points and lines are not in any case the sorts of things which can be colored, since color properly applies only to extended regions and not to the unextended boundaries thereof. Imagine, however, a perfectly homogeneous red surface. Is a point or a line within the interior of this surface not then also red? In the end, however, it does not much matter how we answer this question, since an argument exactly analogous to the one here presented can be formulated also in relation to a range of other sorts of cases (indeed to qualities in general), including cases of qualities for which it is not attractive to suppose that extendedness in space is a precondition of existence.

EXCERPT #CSHBWY p. 1
  Thus the argument can be applied to purely temporal phenomena, such as the beginnings and endings of mental processes. In the work of Zeno and of Bolzano it has been applied to the phenomena of motion and bodily contact. Imagine a body which is for a certain period at rest and then begins to move. Is there a last point in time p_1 when the body is at rest and a first point p_2 when it is in motion? Clearly not, given the density of every continuum; for then we should have to admit an indefinite number of further points between p_1 and p_2 at which the body would somehow be neither at rest nor in motion. To acknowledge one of p_1 and p_2 but not the other would again be to countenance a peculiar privileging of one of the two temporal segments over the other. Perhaps, then, the body is neither in motion nor at rest at the point in time where it crosses the segmentary divide, so that the two temporal intervals would be analogous, once again, to open regions. But is it even coherent to suppose that a body might be neither in motion nor at rest at a certain point in time?

EXCERPT #BC2R43 p. 1
  Imagine, to pursue an example from Bolzano, two perfect spheres at rest and in contact with each other. What happens at the point where they touch? Is there a last point p_1 that belongs to the first sphere and a first point p_2 that belongs to the second? Again: clearly not, for then we should have to admit an indefinite number of further points between p_1 and p_2 and this would imply that the two spheres were not in contact after all. To acknowledge one of p_1 and p_2 but not the other would be to countenance an asymmetry of a quite peculiarly unmotivated sort. And our third alternative seems here to be ruled out also. For to admit that the point where the two spheres touch belongs to neither of the two spheres seems to amount to the thesis that the two spheres do not touch at all.

DOCUMENT #7YZU95
Boundaries: An Essay in Mereotopology

SECTION #DKMEJR The Brentano-Chisholm Theory of the Continuum

EXCERPT #3VL2BA p. 1

EXCERPT #Z2Y7HE p. 2
  What, then, is to be done? As Chisholm has insisted, there is in fact an alternative account of the actual reality, as far as color is concerned, at the point on the line where the red and green segments meet, an account which can be smoothly and uniformly extended to the other cases mentioned. This affirms that there is but one (albeit complex) point of the line which lies precisely on the border between the two segments. This point is colored, but not in simple fashion, for it is in a certain sense both red and green . To put the matter in another way: it is at one and the same time a ceasing to be red and a beginning to be green . And in yet another way still: it is a point where a red point and a green point coincide . Similarly in the case of the particle that begins to move: here too there is a single point at which the body is both at rest and moving (or more precisely: it is at one and the same time ceasing to be at rest and beginning to move ). The terminal boundary of the initial interval coincides with the initial boundary of the subsequent interval. And the same account can be given also of what occurs when two perfect spheres touch: a point on the boundary of the one sphere coincides with a point on the boundary of the adjacent sphere. All bodies and all temporal intervals are on this account analogous to closed regions – or perhaps we should more properly say that there is no analogue in the world of spatial and temporal continua of the standard opposition between open and closed.

EXCERPT #9SHYRP p. 2
  It is the theory of coincidence, and the account of boundaries and the continuum which this dictates, which will occupy us in what follows. We shall concentrate especially on four papers in which Chisholm treats the theory of coincidence of boundaries in space (1983, 1989, 1992/93 and 1994). As will already be clear, analogous reasoning can be applied also to the coincidence of boundaries in time (to beginnings and endings, for example: see Chisholm 1982, 1992), though we shall here leave these, temporal, matters out of account. 2

EXCERPT #QYM63K p. 2
  Chisholm's theory of coincidence is drawn from the work on space, time and the continuum of Franz Brentano and above all from Brentano's idea that what is above all characteristic of a continuum is 'the possibility of a coincidence of boundaries'. (Brentano 1988, pp. 4f.) Brentano's thesis runs: if something continuous is a mere boundary then it can never exist except in connection with other boundaries and except as belonging to a continuum of higher dimension. This must be said of all boundaries, including those which possess no dimension at all such as spatial points and moments of time and movement: a cutting free from everything that is continuous and extended is for them, too, absolutely

EXCERPT #EYNXX4 p. 2
  2 For further discussion of temporal analogues of the issues here discussed see Pianesi and Varzi 1996. See also, for a general formal treatment, Galton 1995.

EXCERPT #FNC9R9 p. 2

EXCERPT #T9RGN7 p. 3
  impossible. Brentano's ideas are based in turn on the conception of boundaries and continua sketched by Aristotle in the Physics . As Brentano developed and elaborated Aristotle's sketchy remarks, so Chisholm sought to render Brentano's ideas in a formal manner, and to incorporate them into a general theory of kinds or categories of being. I shall attempt here to extend and to complete Chisholm's formalizations and to show how much further works need to be done. But I shall seek also to demonstrate that he has in a sense domesticated Brentano's ideas by dissociating them from a number of difficult and puzzling consequences which a more detailed analysis will show to be bound up inextricably with the notion of coincidence.

DOCUMENT #7YZU95
Boundaries: An Essay in Mereotopology

SECTION #X4V2VT Points, Lines and Surfaces

EXCERPT #RGSACS p. 27
  We have already given the following definition of point:

EXCERPT #ZFRQZ6 p. 27
  \text{DPT.} \quad \text{PTx} := \text{Bx} \wedge \forall y(y \leq x \rightarrow y \sim x)

EXCERPT #723V9E p. 27
  Chisholm defines point as follows (1992/93, p. 19):

EXCERPT #WCYWV4 p. 27
  \text{PTx} := \text{Bx} \wedge \neg \Box_x \exists y(y < x)

EXCERPT #VRBHJX p. 27
  The problem with a definition of this sort is that, as we have seen, the mereological sum of coincident points (the red, green, blue points at the center of a disk divided into three differently colored segments) is itself a point, and thus such as to have proper parts.

EXCERPT #AET3K4 p. 27
  Chisholm seeks to define line as follows (1992/93, p. 19):

EXCERPT #JKPP9Q p. 27
  \text{LNx} := \text{Bx} \wedge \exists y(y < x) \wedge \neg \text{SFx}.

EXCERPT #4J9QUW p. 27
  A line would then be a boundary which has parts but is not a surface. To rule out complex points from counting as lines, the middle conjunct needs to be adjusted to:

EXCERPT #3QEP6B p. 27
  \exists y(y < x \wedge \neg x \sim y).

EXCERPT #DULTQG p. 27
  Sums of separate boundaries (pairs of separate points, sums of points and lines, etc.) would still provide counterexamples to the definition. To solve these difficult problems in the space available to us here we therefore introduce the notion of sameness of dimension ( =_{\text{dim}} ) as an additional primitive notion of our theory. 28

EXCERPT #VHEG34 p. 27

EXCERPT #ANGLT5 p. 28
  We can now affirm a generalization of the subtraction theorem for bodies (TK1) above:

EXCERPT #6P8FBY p. 28
  \text{ADim1.} \quad (x < y \wedge x =_{\text{dim}} y) \rightarrow x =_{\text{dim}} (x - y)

EXCERPT #J2EW9V p. 28
  We can also define, by analogy with the case for bodies, what it is for two boundaries to be in direct contact:

EXCERPT #8WCDWB p. 28
  \text{DDCOB.} \quad x\text{DCOBy} := Bx \wedge By \wedge x =_{\text{dim}} y \wedge \exists vw(v < x \wedge w < y \wedge v \sim w \wedge v \neq w)

EXCERPT #5VY8LN p. 28
  and we can affirm an axiom of density for non-punctiform boundaries :

EXCERPT #5XCG4Z p. 28
  \text{ADim2.} \quad Bx \rightarrow \text{PT}x \vee \exists yz (By \wedge Bz \wedge y \cup z = x \wedge \neg yOz \wedge x =_{\text{dim}} y =_{\text{dim}} z)

EXCERPT #WJ4ZTA p. 28
  Can we now define a line as a suitably complex dense boundary that is not a surface and that is connected? To see why not, consider complexes of lines like these, which meet all of these conditions are yet are not lines :

EXCERPT #EDTCVZ p. 28
  Two diagrams illustrating complexes of lines. The left diagram shows a vertical line segment with a horizontal line segment attached to its right side, forming a 'T' shape. The right diagram shows a vertical line segment intersected by a horizontal line segment at its midpoint, forming a cross shape.

EXCERPT #RH4E49 p. 28
  28 This notion can, incidentally, enable us to formulate an alternative definition of connectedness for boundaries along the following lines:

EXCERPT #ALKB3U p. 28
  \begin{aligned} \text{DCNB*}.\text{CNB}x := & \quad Bx \wedge \forall yz[(By \wedge Bz \wedge x =_{\text{dim}} y =_{\text{dim}} z \wedge x = y \cup z) \\ & \rightarrow \exists vw(v \leq y \wedge w \leq z \wedge v \neq w \wedge v \sim w)] \end{aligned}

EXCERPT #7TD8W6 p. 28

EXCERPT #TB5LC6 p. 29
  Let us therefore define first of all the notion of a line-complex via:

EXCERPT #69V9DR p. 29
  \text{DLC.} \quad \text{LCx} := \text{Bx} \wedge \text{CNBx} \wedge \neg \text{PTx} \wedge \neg \exists y (\text{SFy} \wedge y \leq x) \quad (\text{line-complex})

EXCERPT #USVDEA p. 29
  We can eliminate those and other troublesome line-complexes by defining a relation of contact for line-complexes and restricting lines to those line complexes where at most two constituents are in contact at any given point:

EXCERPT #VYNYKA p. 29
  \text{DLCC.} \quad \text{xLCCy} := \text{LCx} \wedge \text{LCy} \wedge \text{CNBx} \cup y \wedge \neg \text{xOy} \quad (\text{connectedness for line-complexes})

EXCERPT #JBS4JD p. 29
  We then set:

EXCERPT #V9JX4M p. 29
  \text{DLN.} \quad \text{LNx} := \text{LCx} \wedge \forall yz[(y < x \wedge z < x \wedge y\text{LCC}z) \rightarrow \forall w((w < x \wedge w\text{LCC}y) \rightarrow w\text{O}z)] \quad (\text{line})

EXCERPT #LP7WNC p. 29
  (lines are line-complexes which, for every point of their extension, can be split into at most two mutually disjoint constituent line-complexes)

EXCERPT #29276B p. 29
  A similar operation will now have to be mounted in order to distinguish genuine surfaces from surface-complexes which arise where surfaces cross or split. (We shall then need to reexamine our definition of line-complex, which employs our earlier, provisional definition of surface.)

EXCERPT #Q6MSTK p. 29
  Even when this is done, much will have been left unsaid. Thus we have not specified that points are parts of lines, that lines are parts of surfaces. Thus a fortiori we have not said either that lines are not mere sums of points and that surfaces are not mere sums of lines. Nor have we said that lines and surfaces have boundaries. We have not defined the single dimensions, nor ruled out fractional dimensions, and nor have we said that points, lines and surfaces are entities of zero, one and two dimensions, respectively. All of these things need to be proved, or stipulated axiomatically on the basis of intuitively reasonable, sound and satisfactory mereotopological considerations. Only then will we have more than the beginnings of a theory of boundaries and coincidence.

EXCERPT #TPJ734 p. 29

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DOCUMENT #M8BQ3S
Do Mountains Exist? Towards an Ontology of Landforms

SECTION #S899WT Abstract

EXCERPT #X6UY82 p. 0
  The paper begins with the question “Do mountains exist?” It shows that providing an answer to this question is surprisingly difficult, and that the answer which one gives depends on the context in which the question is posed. Mountains clearly exist as real correlates of everyday human thought and action, and they form the archetype for geographic objects. Yet individual mountains lack many of the properties that characterize bona fide objects, and mountains as a category also lack many of the properties that characterize natural kinds. In the context of scientific modeling of the environment, especially of such phenomena as surface hydrology and fluvial erosion and deposition, mountains are not picked out as constituents of reality in their own right at all; rather they are just parts of the field of elevations whose gradients shape the direction of runoff and influence the intensity of erosion. Thus while an object-based ontology of mountains and other landforms is required to do justice to our everyday conceptions of the environment, and to support spatial reasoning and natural language processing, topographic databases designed to support environmental modeling can be field-based at geographic scales.

EXCERPT #E8WP3R p. 0

DOCUMENT #M8BQ3S
Do Mountains Exist? Towards an Ontology of Landforms

SECTION #282A8F Introduction

EXCERPT #A52AZ6 p. 1
  Do mountains exist? The answer to this question is surely: yes. In fact, ‘mountain’ is the example of a kind of geographic feature or thing that is most commonly cited by speakers of English (Mark et al., 1999; Smith and Mark 2001), and several other languages. But whether they are considered as individuals (tokens) or as kinds (types), mountains do not exist in quite the same sense as do such prototypical everyday objects as chairs or people, crows or cups.

EXCERPT #N9PH9K p. 1
  The most typical examples of such everyday objects studied in cognitive science fall into two large categories. On the one hand are organisms, products of natural selection; on the other hand are artifacts, products of deliberate design. Typically, instances of organisms and artifacts are objects or things, bona fide wholes with determinate, prominent, and complete boundaries that enclose them and separate them from their environments. It is not an arbitrary matter, a product of mere fiat, where the boundaries of your cat end and those of your carpet begin. The psychologist J. J. Gibson, who developed the project of a so-called ecological psychology, referred to such things as detached objects. Not only are everyday things separated from each other by bona fide boundaries, something similar holds true also for the kinds (types, categories) to which such everyday things belong. These, too, commonly are separated from neighboring categories by categorical boundaries rather than continuous gradations. It is not an arbitrary matter where the natural kind cat ends and where neighboring kinds begin. The natural kinds cat and crow are separated from their neighbors by a long history of natural selection and evolution. Artifactual kinds such as cup and chair are separated from their neighboring kinds in similar fashion by the distinct functions with which they were associated by the people who designed and made them.

EXCERPT #ZRER5R p. 1
  Although they are often named, and sometimes even worshipped, individual mountains do not satisfy the criteria for being objects which we have just outlined for organisms and artifacts. Mountains do not have determinate, prominent, and complete boundaries. While the boundaries between the mountain and the air above its upper slopes may be determinate, prominent, and crisp; it is usually the case that, as we proceed downwards towards the foot of the mountain, no single candidate boundary is distinguishable at all. And similarly in the order of kinds: the category mountain is not distinguished in bona fide fashion from neighboring categories such as hill , ridge , butte , plateau , plain , and so on. The kind mountain is not a product of natural selection, nor does it represent an artifactual kind with bona fide instances which have arisen as a reflection of special human intention or purpose. Indeed the kind mountain begins to seem more like such kinds as neighborhood or locality —as a kind that is demarcated, both as a type and in its tokens, as a mere reflection of human habits of perception and action (Montello et al., 2001). These habits of perception and action may, moreover, vary from one culture to another, so that what is called a ‘Berg’ in German may not coincide perfectly with what is called a ‘mountain’ in English. In this sense, the question “Do mountains exist?” is not quite as foolish as it may have earlier appeared.

EXCERPT #XWUCB6 p. 1

EXCERPT #GU84M8 p. 2
  In this paper, we will expand upon these points and explain their implications for the geographic ontology that will be needed if information systems are to be built which are friendly to untrained users yet at the same time able to support environmental modeling and other GIS applications. Finally, we will address the question of the role of mountains as entities in scientific models of the environment.

DOCUMENT #M8BQ3S
Do Mountains Exist? Towards an Ontology of Landforms

SECTION #VLEBW6 Conclusions

EXCERPT #5XCWY9 p. 17
  A complete ontology of the geospatial world would need to comprehend not only the common-sense world of primary theory but also the field-based ontologies that are used to model runoff and erosion. The completion of such an ontology is a challenging task, involving serious research challenges ranging from ontological specification to algorithm development. But its realization would bring significant benefits, since many serious professional users of geographic information, such as pilots, soldiers, and scientists, hikers, wildfire fighters, and naturalists, must communicate about particular parts of the landscape as if they were objects, while at the same time drawing on the resources of field-based topographic databases.

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DOCUMENT #FQCWKV
A Theory of Granular Partitions

SECTION #HADPD5 1 INTRODUCTION

EXCERPT #69ZSRH p. 0
  Imagine that you are standing on a bridge above a highway checking off the makes and models of the cars that are passing underneath. Or that you are a postal clerk dividing envelopes into bundles; or a laboratory technician sorting samples of bacteria into species and subspecies. Or imagine that you are making a list of the fossils in your museum, or of the guests in your hotel on a certain night. In each of these cases you are employing a certain grid of labeled cells, and you are recognizing certain objects as being located in those cells. Such a grid of labeled cells is an example of what we shall call a granular partition . We shall argue that granular partitions are involved in all naming, listing, sorting, counting, cataloguing and mapping activities. Division into units, counting and parceling out, mapping, listing, sorting, pigeonholing, cataloguing are activities performed by human beings in their traffic with the world. Partitions are the cognitive devices designed and built by human beings to fulfill these various listing, mapping and classifying purposes.

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  In almost all current work in areas such as common-sense reasoning and natural language semantics it is the naïve portion of set theory that is used as basic framework. The theory of granular partitions as it is developed in this paper is intended to serve as an alternative to set theory both as a tool of formal ontology and as a framework for the representation of human cognition. Kinds, sorts, species and genera are standardly treated as sets of their instances; subkinds as subsets of these sets. Set theory nicely does justice to the granularity that is involved in our sorting and classification of reality by giving us a means of treating objects as elements of sets, i.e. as single whole units within which further parts are not recognized. But set theory also has its problems, not the least of which is that it supports no distinction between natural totalities (such as the species cat ) and such ad hoc totalities as, for example, {the moon, Napoleon, justice}.

EXCERPT #DBQTZ5 p. 0
  Set theory has problems, too, when it comes to dealing with time, and with the fact that biological species and similar entities may remain the same even when there is a turnover in their instances. For sets are identical if and only if they have the same members. If we model the species cat as the set of its instances, then this means that cats form a different species every time a cat is born or dies. If, similarly, we identify an organism as the set of its cells, then this means that it becomes a different organism whenever cells are gained or lost.

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  Set theory has problems also when it comes to dealing with the relations between granularities. An organism is a totality of cells, but it is also a totality of molecules, and it is also a totality of atoms. Yet the corresponding sets are distinct, since they have distinct members.

EXCERPT #WK3C5Q p. 1
  More recently, attempts have been made to solve some of these problems by using mereology or the theory of part and whole relations (Smith, 1998) as a framework for ontological theorizing. Mereology is better able to do justice in realistic fashion to the relations between wholes and their constituent parts at distinct levels of granularity. All the above-mentioned totalities (of cells, molecules, atoms) are, when treated mereologically, one and the same. Mereology also has the advantage over set theory when it comes to serving as a tool for the sort of middle-level ontological theorizing which the study of common-sense reasoning requires. For mereology does not require that, in order to quantify over wholes of given sorts, one must first of all specify some level of ultimate parts (the Urelemente of set theory) from out of which all higher-level entities are then constructed.

EXCERPT #NUZZBX p. 1
  But mereology, too, has its problems. Thus it, too, has no way of dealing with entities which gain and lose parts over time and it has no way of distinguishing intrinsically unified wholes from ad hoc aggregations. Above all, its machinery for coping with the phenomenon of granularity brings problems of its own, for if we quantify over wholes, in a mereological framework, then we thereby quantify over all the parts of such wholes, at all levels of granularity. The selectivity of intentionality means however that we are often directed cognitively to coarse-grained wholes whose finer-grained parts are traced over: when I think of Mary I do not think of all the molecules in Mary's arm. Mereology has no means of mimicking the advantages of set-theory when it comes to dealing with such phenomena, and it is no small part of our project here to rectify this defect. The theory of granular partitions is the product of an effort to build a more realistic, and also a more general and flexible, framework embodying the strengths of both set theory and mereology while at the same time avoiding their respective weaknesses.

DOCUMENT #FQCWKV
A Theory of Granular Partitions

SECTION #PYMKJQ 4 GRANULAR PARTITIONS IN THEIR PROJECTIVE RELATION TO REALITY

SECTION #CBV5HG 4.1 Projection

EXCERPT #WWH2RS p. 9
  Partitions are more than just systems of cells. They are constructed to serve as inventories or pictures or maps of specific portions of reality, and in this they are analogous to windows , or to the latticed grills purported to have been used by Renaissance artists as aids to the faithful representation of objects in reality (Smith, 2001b). They are analogous also to propositions ( Elementarsätze ) as described by Wittgenstein in the Tractatus (1961). A proposition, for Wittgenstein, is built out of simple signs (names) arranged in a certain order. Each name, Wittgenstein tells us, stands in a projective relation to a corresponding object in the world: it cannot fail to strike its target. If a proposition is true, then its simple signs stand to each other within the proposition as the corresponding objects stand to each other in the world. It is in this sense that a true atomic proposition is a picture, as Wittgenstein puts it, of a state of affairs in reality. That a proposition is a complex of names arranged in a certain order is in our present context equivalent to the thesis that a partition is a complex of cells arranged in a certain order.

EXCERPT #U74BS4 p. 9
  A partition is a complex of cells in its projective relation to the world (compare Tractatus , 3.12). This relation may be effected either directly by the user of the partition—for example in looking through the cells of the grid and recording what objects are detected on the other side—or indirectly, with the help of proper names or other referring devices such as systems of coordinates or taxonomic labels.

EXCERPT #YVX3PD p. 9
  For Wittgenstein it is guaranteed a priori for every name that there is some unique object onto which the name is projected. From the perspective of the theory of granular partitions, in contrast, projection may fail. That is, a partition may be such that—like the partition cataloguing Aztec gods—there are no objects for its cells to project onto. Works of fiction and also not yet realized plans may be conceived as involving partitions of this kind.

EXCERPT #RSR7VC p. 9
  In this paper, however, we are interested primarily in partitions which do not project out into thin air in this way. We write ' P(z, o) ' as an abbreviation for: cell z is projected onto object o . We can also, if the context requires it, write ' P_A(z, o) ' to indicate that the projection of z onto o obtains in the context of partition A . In what follows we shall assume that a unique such projection is defined for each partition. In a more general theory we can weaken this assumption, for example by allowing projections to vary with time while the partition remains fixed (Smith and Brogaard, 2002a). Such variation of projection for a fixed partition is involved in all sampling activity. Consider, for example, what happens when we use a territorial grid of cells to map the presence of one or more birds of given species in given areas from one moment to the next.

SECTION #X57HET 4.2 Location

EXCERPT #XMZVGJ p. 9
  If projection is successful, then the object upon which a cell is projected is located in that cell. The use of the term 'location' reflects the fact that one important inspiration of our work is the study of location relations in spatial contexts. One motivating example of a location relation within our theory is the relation between a spatial object such as a railway station and an icon on a map. Other motivating examples are of a non-spatial sort: they include the relation between an instance (Tibbles) and its kind (cat) or the relation between a customer and the corresponding record in a database. Indeed they include the relation between you and your name.

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EXCERPT #U9KSJL p. 10
  We can compare a partition with a rig of spotlights projecting down onto an orchestra during the performance of a symphony. Each cell of the partition corresponds to some spotlight in the rig. Some cells (spotlights) will project upon single players, others onto whole sections of the orchestra (string, wind, percussion, and so forth). One cell (spotlight) will project upon the orchestra as a whole. Note that the spotlights do not hereby create the objects which they cast into relief. When once the rig has been set, and the members of the orchestra have taken their places, then it will be an entirely objective matter which objects (individuals and groups of individuals) are located in which illuminated cells.

EXCERPT #VPJCZD p. 10
  In what follows we make the simplifying assumption that objects are exactly located at their cells (that spotlights never partially illuminate single players or sections). Compare the way in which Wyoming is exactly located at the cell 'Wyoming' in the partition of the US into States or the way in which your brother Norse is exactly located at the cell 'Norse' in your partition (list) of your family members. In a more general theory we liberalize the location relation in such a way as to allow also for partial or rough location (Casati and Varzi, 1995; Bittner and Stell, 1998).

SECTION #K2LWW7 4.3 Transparency

EXCERPT #LUMNTD p. 10
  When projection succeeds, then location is what results. Projection and location thus correspond to the two directions of fit—from mind to world and from world to mind—between an assertion and the corresponding truthmaking portion of reality (Searle, 1983; Smith, 1999). Projection is like the relation which holds between your shopping list and the items which, if your shopping trip is successful, you will actually buy. Location is like the relation which obtains between the items you have bought and the new list your mother makes after your return, as she checks off those items which you have in fact succeeded in bringing back with you.

EXCERPT #MNNNLQ p. 10
  The formula ' L(o, z) ' abbreviates: object o is located at cell z . (And again where this is required we can write ' L_A(o, z) ' for: o is located at z in partition A .) Location presupposes projection: an object is never located in a cell unless the object has already been picked out as the target of the projection relation associated with the relevant partition. But successful projection—by which is meant the obtaining of the projection relation between a cell and an object—also presupposes location, so that where both L and P obtain they are simply the converse relations of each other. We have now reached the point where we can formulate the first of our master conditions on partitions from the perspective of theory (B):

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  \text{MB1: } L(o, z) \rightarrow P(z, o)

EXCERPT #GQ8CDF p. 10
  \text{MB2: } P(z, o) \rightarrow L(o, z)

EXCERPT #636PHE p. 10
  (Successful) projection and (successful) location are simple converses of each other. (We formulate this principle as two separate conditions in order to leave room for a more general theory in which these two relations are teased apart.)

EXCERPT #EPFJLN p. 11

EXCERPT #SLZCMJ p. 11

EXCERPT #WDGLU3 p. 11
  MB1 and MB2 tell us that a partition projects a given cell onto a given object if and only if that object is located in the corresponding cell. Very many partitions—from automobile component catalogues to our maps of states and nations—have this quality without further ado.

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  We shall call partitions which satisfy MB1 and MB2 transparent partitions, a notion which we can define in the obvious way as follows:

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  \text{DTr: } \text{Tr}(A) \equiv \forall z \forall o : P_A(z, o) \leftrightarrow L_A(o, z)

EXCERPT #CPKU8R p. 11
  MB1 and MB2 jointly ensure that objects are actually located at the cells that project onto them. Notice however that a transparent partition, according to our definition, may still have empty cells. Such cells may for example be needed in the context of scientific partitions in order to leave room for what, on the side of the objects, may be discovered in the future. (Compare the cells labeled Ununnilium, Ununonium and Ununbium in the Periodic Table of the Elements.) Empty cells may similarly be needed to cover up for temporary lapses in memory. You are attempting to account for the people at your party last night. Your partition consists of six cells labeled: John, Mary, Phil, Chris, Sally, and anyone else (for people you might have forgotten). Assume that John, Mary, Phil, Chris and Sally is a complete listing of all the people at the party. Your anyone else cell is then empty.

SECTION #7BK7KZ 4.4 Functionality constraints (constraints pertaining to correspondence to objects)

SECTION #DR2XFU 4.4.1 Projection is functional: the confused schoolboy

EXCERPT #VDTBBU p. 11
  The property of transparency is still rather weak. Thus transparency is consistent with ambiguity on the side of the cells in relation to the objects they target, that is with the case where one cell projects onto two distinct objects. An example of the sort of problem we have in mind is the partition created by a lazy schoolboy studying the history of the Civil War in England. This partition has one cell labeled ‘Cromwell’—and so it does not distinguish between Oliver and his son Richard. Another example might be the partition utilized by those who talk of ‘China’ as if the Republic of China and the People’s Republic of China were one single object.

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  To eliminate such ambiguity we lay down a requirement to the effect that each partition must be such that its associated projection is a functional relation:

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  \text{MB3: } P(z, o_1) \text{ and } P(z, o_2) \rightarrow o_1 = o_2

EXCERPT #5VYAXN p. 11
  For partitions satisfying MB3, cells are projected onto single objects (one rather than two). Consider the left part of Figure 3. The dotted arrow can occur in partitions satisfying merely MB1–2 but not in partitions also satisfying MB3. Notice, though, that projection might still be a partial function, since MB3 does not rule out the case where there are empty cells.

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  To impose the functionality of projection on all partitions is in one respect trivial. For we can very easily convert a partition A which does not satisfy MB3 into one which does. If z is a cell in A which does not satisfy MB3, then we create this new partition A' by adjusting A in such a way that z now projects upon the mereological sum of the objects its projects upon in A . This account seems, indeed, to do justice to what is involved in the confused schoolboy case, namely that Richard and Oliver are run together, somehow, into one composite human being.

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  Figure 3: Two diagrams illustrating transparent partitions. The left diagram shows a partition with cells Z1, Z2, and Z3. Z1 is connected to object O1 by a solid double-headed arrow, and Z2 is connected to O1 by a dotted arrow. Z3 is not connected to any object. The right diagram shows a partition with cells Z1, Z2, and Z3. Z1 is connected to object O1 by a solid double-headed arrow, and Z2 is connected to O1 by a dotted arrow. Z3 is not connected to any object. In both diagrams, O2 is present but has no connections.

EXCERPT #9P38AA p. 12
  Figure 3: Transparent partitions in which projection is not functional (left); location is not functional (right)

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  In the remainder of this paper we use the notation o = p(z) instead of P(z, o) whenever we assume that projection is functional.

SECTION #NBA7LN 4.4.2 Location is functional: the Morning Star and the Evening Star

EXCERPT #P8FJJ3 p. 12
  Consider a partition having root cell labeled ‘heavenly bodies’ and three subcells labeled: ‘The Morning Star’, ‘The Evening Star’, and ‘Venus’, respectively. As we know, all three subcells project onto the same object. This partition is perfectly consistent with the conditions we have laid out thus far. Its distinct subcells truly, though unknowingly, project onto the same object. It is not unusual that we give different names (or class-labels) to things in cases where we do not know that they are actually the same. A good partition, though, should clearly be one in which such errors are avoided.

EXCERPT #G2B4G8 p. 12
  Partitions manifesting the desired degree of correspondence to objects in this respect must in other words be ones in which location, too, is a functional relation:

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  \text{MB4: } L(o, z_1) \text{ and } L(o, z_2) \rightarrow z_1 = z_2

EXCERPT #TMNHE5 p. 12
  In partitions that satisfy MB4, location is a function, i.e., objects are located at single cells (one rather than two). Consider the right part of Figure 3. The dotted arrow can occur in partitions satisfying MB1–2, not however in partitions also satisfying MB4. As MB3 rules out co-location (overcrowding), so MB4 rules out co-projection (redundancy). Note that natural analogues of co-location and co-projection are not even formulable within a set-theoretic framework.

DOCUMENT #FQCWKV
A Theory of Granular Partitions

SECTION #G5GBKW 10 CONCLUSIONS

EXCERPT #23GYLX p. 29
  This paper is a contribution to a formal theory of granular partitions. We defined master conditions that need to be satisfied by every partition. These master conditions fall into two groups: (A) master conditions characterizing partitions as systems of cells, and (B) master conditions describing partitions in their projective relation to reality.

EXCERPT #7YGTK9 p. 29
  At the level of theory (A) partitions are systems of cells that are partially ordered by the subcell relation. Such systems of cells are such that they can always be represented as trees, they have a unique maximal element and they do not have cycles in their graph-theoretic representations. But partitions are more than just systems of cells. They are also cognitive devices that are directed towards reality.

EXCERPT #HLB7Y6 p. 29
  Theory (B) takes this latter feature into account by characterizing partitions in terms of the relations of projection and location. Cells in partitions are projected onto objects in reality. Objects are located at cells when projection succeeds. We then say that a partition recognizes the objects that are located at its cells. To talk of granular partitions is to draw attention to the fact that partitions are in every case selective; even when they recognize some objects, they will always trace over others.

EXCERPT #SVQ42V p. 29
  Partitions do not only recognize objects, they are also capable of reflecting the mereological structure of the objects they recognize through a corresponding mereological structure on the side of their cell array. This does not mean, however, that all partitions actually do reflect the mereological structure of the objects they recognize. For it is an important feature of partitions that they are also capable of tracing over mereological structure. There are, for example, large classes of partitions that simply list objects, without caring at all how these objects hang together mereologically.

EXCERPT #L7KFSE p. 30

EXCERPT #GL2AXX p. 30

EXCERPT #9NRWM4 p. 30
  Our discussion of granularity showed that partitions have three ways of tracing over mereological structure: (1) by tracing over mereological relations between the objects which they recognize; (2) by tracing over the parts of such objects; (3) by tracing over the wholes which such objects form. The tracing over of parts is (unless mereological atomism is true) a feature manifested by every partition, for partitions are in every case coarse grained . The tracing over of wholes reflects the property of granular partitions of foregrounding selected objects of interest within the domain onto which they are projected and of leaving all other objects in the background where they fall in the domain of unconcern.

### 52. Tool result: read

DOCUMENT #3TZK66
Capabilities: An Ontology

SECTION #D2UCXV Abstract

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  In our daily lives, as in science and in all other domains, we encounter huge numbers of dispositions (tendencies, potentials, powers) which are realized in processes such as sneezing, sweating, shedding, melting. Among this plethora of what we can think of as 'mere dispositions' is a subset of dispositions in whose realizations we have an interest – a car responding well when driven on ice, a rabbit's lungs responding well when it is chased by a wolf, and so on. We call the latter 'capabilities' and we attempt to provide an ontological account of what capabilities are that is of sufficient generality to serve a variety of purposes, for example by providing a useful extension to ontology-based research in areas where capabilities data are being collected in siloed fashion.

DOCUMENT #3TZK66
Capabilities: An Ontology

SECTION #Q4LDQQ 1. Introduction

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  Capabilities are everywhere. There are software capabilities, gardening capabilities, intellectual capabilities; there are innate capabilities and capabilities gained through practice; capabilities of individuals, capabilities of organizations, and capabilities of machines. There is a large literature on capabilities of different types. But there is not, to our knowledge, any serious attempt to create an account of capabilities that is of sufficient generality for use as a starting point for the formulation of mutually consistent definitions of terms referring to the various subspecies of capability that have been identified in different areas. An account of this sort would then be useful especially in those areas where capability identification can be an urgent need – in emergency management, for example, where responsible organizations need to have rapid access to relevant experts who can advise and assist following a disaster [1]. Sample areas in which capability identification are of importance include:

EXCERPT #3CC7VH p. 0
  Proceedings of the Joint Ontology Workshops (JOWO) - Episode X: The Tukker Zomer of Ontology, and satellite events co-located with the 14th International Conference on Formal Ontology in Information Systems (FOIS 2024), July 15-19, 2024, Enschede, The Netherlands.

EXCERPT #5S44W4 p. 0
  * Corresponding author.

EXCERPT #59GXY8 p. 0
  ✉ johnbeve@buffalo.edu (J. Beverley); davidlimbaugh@gmail.com (D. Limbaugh); ontomerrell@gmail.com (E. Merrell); petermkoch@gmail.com (P. M. Koch); ifomis@gmail.com (B. Smith)

EXCERPT #U6RC9V p. 0
  Creative Commons Attribution 4.0 International License logo (CC BY 4.0)

EXCERPT #B9DQY9 p. 0
  © 2024 Copyright for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

EXCERPT #4R29HQ p. 1
  Medicine. When a patient is admitted to a hospital, medical professionals with salient capabilities must be identified and made available. There are relevant capabilities also on the side of the patient, and medical professionals may need to communicate information for example regarding a patient's interests and values, as well as their responses to medication and treatment [2]. A patient's responsiveness to her doctor's instructions, for example, is a capability of the patient that is associated with the satisfaction of her interests, including her interest in survival [3]. Epidemiologists and pathologists must often communicate information concerning the capabilities of medications. Remdesivir, for example, was developed to treat hepatitis C, repurposed to treat Ebola, and may be effective at treating COVID-19 [4, 5]. Such creative exploration of potential new uses of existing drugs, which is at the heart of rational drug design, is exploration in the realm of capabilities.

EXCERPT #EATCAS p. 1
  Industrial manufacturing. We find in the industrial domain myriad examples of ways in which capabilities-related data play a vital role. Materials – both kinds of materials and individual batches – are selected as inputs into manufacturing processes based on capability-related properties such as availability, malleability, elasticity, electrical resistance, and so forth. Maintenance data are used to document the effects of different maintenance regimes on the ways the capabilities of equipment and products evolve over time. Supply chain data include information on the capabilities (reliability, flexibility, financial stability, precision of work) of potential suppliers [6, 7].

EXCERPT #T4BZGA p. 1
  Defense and security. National security decisions require that we have an accurate understanding of the capabilities 2 not only of ourselves and of our allies but also of our actual and potential adversaries [8], and of the complex capabilities the need for which arises in specific mission contexts. Mission-relevant capabilities may be borne not only by single warfighters but also by collectives thereof, and new capabilities may arise as a result of how collections are configured [9]. One infantryman, for example, may be trained to leverage GPS targeting equipment, another to operate surface-to-air missiles. Together they have the capability to engage enemy aircraft. An air force unit trained in combination with a unit of ground troops has the capability to engage in joint air-and-land assaults. This idea was developed into a form of capabilities engineering in the framework of what the Chairman of the Joint Chiefs of Staff defined as 'Joint Capability Areas', which are "DoD capabilities functionally grouped to support capability analysis, strategy development, investment decision making, capability portfolio management, and capabilities-based force development and operational planning." [10, 11]

EXCERPT #QBJQMG p. 1
  Education and training. Capabilities play a central role in the domain of education, which is a complex of activities designed to produce persons with cognitive capabilities at successively higher levels of sophistication, and to produce at the same time persons with the capabilities required by educators themselves at successively higher tiers in the hierarchy of educational institutions. An organization's training activities – whether devoted to the training of Olympic athletes or of Customs and Border Protection field agents – have a similar goal. Organizations have an interest in hiring talented individuals to further

EXCERPT #CZCL98 p. 1
  2 And also vulnerabilities – a topic we will address in a sequel to this communication.

EXCERPT #FPFXAT p. 2
  organizational goals. Individuals have an interest in acquiring the sorts of capabilities needed to address an organization's needs.

EXCERPT #LHU8F4 p. 2
  Testing both students and trainees serves the purpose of measuring the degree to which they can realize the capabilities they are being schooled or trained to acquire. Acquisition of such capabilities is then signaled through diplomas and certifications. What holds for trainees holds equally for artifacts, where we also find batteries of tests and other mechanisms designed to validate improvements or identify deficits in artifact capabilities.

DOCUMENT #3TZK66
Capabilities: An Ontology

SECTION #EUW287 4. Defining 'Capability'

EXCERPT #JHZGB8 p. 6
  An SUV is capable of ferrying passengers and luggage. Were the SUV to cease to exist, so too would its capabilities. A dependence of this sort on some material entity exists for all capabilities. This tells us that capabilities in BFO are best described as specifically dependent continuants . Capabilities are, moreover, instances of what BFO calls realizable entities . If they are realized, then it is always through some process . This fact provides the link between capabilities , on the one hand, and processes on the other.

EXCERPT #H929J9 p. 6
  The choice of whether capability best falls under role or disposition turns on whether capabilities are internally or externally grounded – or in other words on whether they are grounded in their bearers or in something – for example some authority – in their wider environment. A litmus test for determining whether a realizable entity is a role or a disposition is: does the gain or loss of the realizable entity require some physical change to its bearer? [25] If yes, then it is internally grounded and so a disposition . If no, then it is externally grounded and so a role . A portion of steel may gain or lose its ability to cut through softer metals, either of which would result in physical change in the steel itself. An untenured assistant professor may gain tenure when a certain document is signed without herself being physically changed in any way.

EXCERPT #SWS5LM p. 6
  The examples of capabilities that we have presented above fall always on the disposition side. A student who learns to code in C++ has acquired a capability to do so, the loss of which would involve some material change localized in her brain. That said, there seem to be plausible uses of the term 'capability' on the role side also. As an example, let us suppose that you are promoted on a temporary basis because your superior has called in sick. People might then say that you now have the capability to issue orders, where 'x has the capability to do y' means something like 'x is allowed' or 'has the authority to do y'. While this certainly involves a sense of 'capability' that is of importance to the full understanding of its natural language use, this meaning is orthogonal to the sense at issue here.

EXCERPT #F6KPMH p. 6
  Dispositions and roles are nonetheless in many cases intimately related. This is because, even though they are ontologically distinct, they are often instantiated together in a single bearer. If you are appointed to the role of floor sweeper, then you will very soon, as you proceed to realize your new role , acquire capabilities associated with floor sweeping. As another example, suppose that I have set aside a certain flathead screwdriver for use in opening paint cans. Then it seems plausible to understand that screwdriver as having both a role and a disposition [31, 33]. And this is as it should be. For the role borne by the screwdriver is a role whose realizations depend in part on capabilities borne by the screwdriver. It is in fact because of such capabilities that the screwdriver can even be considered for the role of paint can opener.

EXCERPT #YHV33D p. 7
  One consequence of our account is that, while immaterial entities such as sites may bear roles , because they lack material parts they cannot bear capabilities . This is a feature rather than a bug. It makes sense to say that the site that is the air space above Utah bears a role in, say, U.S. military defense protocol. It makes little sense to say that this entity bears a capability . Similarly, it is the surrounding fences, gates, and guards bearing arms which together bear the capability to allow and to prevent passage through the Rafah Crossing. 11

EXCERPT #HPG4U7 p. 7
  Our proposal also implies that generically dependent continuants such as software tools, which also lack material parts, cannot bear capabilities . That said, 'software tool' is ambiguous as between portions of code, algorithms, scripts, and so on, on the one hand – which are generically dependent continuants – and, on the other hand, the hardware implementing such entities: for example a central processing unit in which a given piece of software is installed. The latter is a material entity in BFO terms, and any software tool in the former sense must, if it is to bear capabilities , realize those capabilities via execution in hardware. Talk of algorithms 'bearing capabilities' is thus best understood as shorthand for statements about capabilities of the hardware-software amalgam which results when the algorithms are being implemented.

SECTION #XTREKS 4.1. Interest In

EXCERPT #485EDS p. 7
  Capabilities are in every case dispositions whose realizations are associated with some goal or, more generally with some interest, which an organism or group of organisms has. If you have an interest in a thing in the sense at issue here, this implies that whatever affects the thing directly can have a direct or indirect effect on you. To have an interest in something is to not be a disinterested party . You have an interest in keeping your neighborhood clean. You do not have an interest in keeping clean the surfaces of passing asteroids. In the relevant sense here, therefore, the meaning of 'interest in' is skew to what we might call the curiosity sense of 'interest' (with negative form uninterested in ) that is manifested, for example, in scientific research.

EXCERPT #R3LXSD p. 7
  Having an interest in the realization of a capability is a relation which holds between organisms or groups of organisms and processes that are realizations of dispositions in some material entity . The reference to groups turns on the essentially collective nature of many capabilities. One person alone does not have the capability to dance the foxtrot, for example. It has been argued that language, too, is an essentially collective capability [34].

EXCERPT #JVVPVJ p. 7
  There is an important special class of interests which arise through the presence of goals. Goals are phenomena of a type characteristic of human organisms in that they go beyond mere survival and reproduction. When someone has a goal, then they have at least a minimal plan to achieve that goal, and at least some disposition , however weak or incipient, to realize the plan. If, for example, your goal is to own a Ferrari, then you must have at least a minimal plan to raise the needed funds, and you will then, given your goal,

EXCERPT #3WEJ3Z p. 7
  11 One family of examples of capabilities – bodyguard capabilities – are per accidens never, or only rarely, realized. The capability of your immune system to respond, for example, to a Helmut infection, may never be realized. The capability of parts of your bank's vault designed to lock the vault during a break-in, may never be realized.

EXCERPT #HCWQBQ p. 8
  have an interest in processes of the type prescribed by that plan. In many such cases, realizing the plan will involve the creation of new capabilities . Complex plans, such as launching a space station into orbit, will involve the specification of huge numbers of processes chained together at many levels. Many of these processes will require the creation of specific capabilities on the side of both humans and machines. Many of the latter will be functions of the relevant artifacts, namely in those cases where artifacts are brought into being because of a plan to create an entity that can realize processes of a certain sort.

EXCERPT #B37M2J p. 8
  Plans and goals aside, there are endlessly many cases where non-human organisms have an interest, though we cannot properly speak of their 'having goals'. There is some residual sense in talking of survival and reproduction as goals of, for example, a nematode worm. But then the features that we associate with having goals on the part of humans 12 are absent. Our proposal thus covers cases where interest is and is not related to goals.

EXCERPT #VG4P8M p. 8
  We take 'has an interest in' as a primitive relational expression, which means that we cannot provide a non-circular definition [35]. We can however assert necessary conditions for the relation to obtain:

EXCERPT #D2NQT9 p. 8
  o has an interest in p only if

EXCERPT #LGHBXP p. 8
  1. o is an organism or group of organisms. 2. For some material entity m with dispositions b i and realizations p i : p is among these realizations and p may causally influence or be influenced by o . Examples of m are: you, your heart, your home, your loved ones, your enemies. Examples of p are: your heart beating, your daughter winning a race. 3. p contributes to the survival and reproduction of o or to the realization of o 's goals.

EXCERPT #Y3DCTW p. 8
  These conditions allow that one need not be aware that one has interest in realizations of some process in order to have a corresponding interest, as is the case when a nematode has an interest in survival, or your grandfather has an interest acetylcholine uptake in his synapses. 13

SECTION #GUAQJW 4.2. Not All Capabilities are Functions

EXCERPT #MDYZUU p. 8
  There are similarities between capabilities and functions . First, any instance of function exists in virtue of its bearer's physical makeup, which is a feature shared with capabilities . Each instance of function is further such that its realizations can be evaluated according to some standard [31]. The realizations of capabilities , too, can be evaluated in this way. Your car's capability to transmit in stereo may be realized with a signal of greater or lesser clarity.

EXCERPT #LTXF8R p. 8
  But there are also differences. Human beings (in our view) do not have functions , but they do have capabilities , because they have parts with functions whose realization contributes to their survival. My digestive system, for instance has the function to digest food, and therefore I have the capability to digest food. Similarly, our flathead screwdriver bears a function to drive screws using torque, but it may also, as we saw, bear the disposition to open paint cans. And if people have an interest in using a screwdriver in this way, then its disposition to open paint cans acquires the status of a capability .

EXCERPT #SABNCY p. 8
  12 For a formalization of these features, compare the treatment of 'plan' in [36].

EXCERPT #ARR9Z2 p. 8
  13 We discuss this topic in more detail in 4.6.

EXCERPT #5NG22K p. 9
  Additionally, each instance of function is such that we can advert to this function in explaining how its bearer came into existence. The presence of a capability , in contrast, need have no etiological consequences of this sort.

EXCERPT #FCDTXC p. 9
  We can now offer the following definition of capability :

EXCERPT #Z545EW p. 9
  x is a capability just in case x is a disposition in whose realization some organism or group of organisms has or had 14 an interest.

SECTION #ME5F53 4.3. All Functions are Capabilities

EXCERPT #Y8KU2V p. 9
  The above observations motivate our conclusion that not all capabilities are functions . Nevertheless, all functions are capabilities . A function in BFO is borne either:

EXCERPT #JQZKDA p. 9
  1. by a biological entity (a part of some organism), whose function is such that the bearer has an interest in its realization because the bearer has an interest in its own survival and/or reproduction; or 2. by an artifact that is the product of intentional design by one or more organisms who have an interest in the realization of the function of the artifact.

EXCERPT #PUYSFF p. 9
  In either case there is some organism or group of organisms which has an interest in the realization of a function , and since the function is a disposition , they have an interest also in the realization of a disposition . If x is a disposition in whose realizations an organism has an interest , then x is a capability . It follows that all functions are capabilities .

SECTION #ZG4NMD 4.4. Functions vs Role

EXCERPT #9WXZKH p. 9
  Our account helps to disambiguate certain natural language uses of ‘function’ and ‘role’. The term ‘functional role’, for example, is often used to describe some key individual within an organization who must perform certain activities to ensure that the organization operates properly. In BFO, such activities would involve individuals bearing roles of the mentioned sort. But the bearer of such a role , for example the mayor of a city, must in addition have the capabilities needed to perform the required operations, such as speaking the relevant language. In short, the mayor’s ‘functional role’ is indeed simply a role , but one whose realization depends on various capabilities , whether pre-existing or acquired on the job.

EXCERPT #BQA5V7 p. 9
  Consider, similarly, that part of the literature on functions which distinguishes between ‘primary’ and ‘secondary’ functions [37]. The primary function of a car engine is to enable motion of the car. This it achieves through the realization of secondary functions borne, for example, by piston parts, functions which they realize by combusting gasoline. Here both primary and secondary functions satisfy our definition of function simpliciter . A secondary function is a function whose realization enables an object to perform its primary function. The significance of this idea turns on the fact that one might design engines that accomplish the same primary function by realizing different secondary functions, for example by means of an engine whose parts are designed to combust diesel fuel or methane.

EXCERPT #HPJXP5 p. 9
  In this way, distinguishing between primary and secondary functions can become part of a strategy to achieve cost-effective artifact design. For example, a car with an internal combustion engine emits considerable heat following combustion. The internal combustion

EXCERPT #S2FBDV p. 9
  14 On this ‘or had’ clause see 4.5 below.

EXCERPT #TF4SGC p. 10
  engine bears neither a primary nor a secondary function to produce excess heat. However, because the heat produced is sufficient to warm a car cabin at no additional energy cost, the combustion engine bears a capability to produce excess heat. It is recognition of such a capability during design of a car heating system that is leveraged to reduce costs by having excess heat diverted into the car cabin. In other words, the primary function of a car heating system is partially enabled by the capability of the engine to produce excess heat.

SECTION #YU2T29 4.5. Capability Death

EXCERPT #JM6HGH p. 10
  When does a capability cease to exist? Here we defend an account that is modelled on the account we provide of the end-of-life for functions . According to BFO, a function exists if and to the extent that there is a real possibility for it to be realized [30]. Whether the relevant possibility exists turns on the intrinsic physical structure of the bearer of the function . If the old heater in my attic is undamaged then it continues to have the function of a heater, and this would be so, providing its mechanism survives intact, even if the heater were to be encased in concrete. If, on the other hand, the heater is broken beyond repair, then it thereby loses its function . Functions may on this view become obsolete, but they still survive as functions providing that the bearer has suffered no physical changes of a sort that would preclude realization.

EXCERPT #26B392 p. 10
  A similar argument, now, can be applied to capabilities , resulting in the following constraint:

EXCERPT #6WQJC6 p. 10
  If x has an interest in the realization of disposition y at time t , then y is a capability at t and at all subsequent times during which y exists.

EXCERPT #3MBNVX p. 10
  A Betamax player, still today, bears a function to play Betamax tapes, and this is so even if no one is left who has an interest in realizing this function . Since every function is a capability , it follows trivially that the Betamax player bears a capability to play Betamax tapes independently of any surviving interest. As a perhaps more extreme example, consider the discovery of an ancient artifact – a stick, of a type used in certain now forgotten rituals of human sacrifice. No one today has an interest in realizations of the specific dispositions borne by this specific stick. But the sacrificial high priest had such an interest. Since, in the intervening centuries, the stick is (by assumption) not physically changed, it follows that it still has the corresponding capabilities . This is a desirable consequence: among the reasons archeologists have sought intact exemplars of a stick of this type was precisely because of the desire to test their conjectures concerning their capabilities .

SECTION #CADS9C 4.6. Capability Birth

EXCERPT #6VMMLA p. 10
  Capabilities begin to exist either when a disposition begins to exist in response to the interests of some organism, or when an already existing disposition becomes a capability because an organism acquires an interest in its realization. That many capabilities are being created ab ovo is revealed by annual patent statistics. Pre-existing capabilities may be discovered independently, for example by different groups of researchers. Much as the physical basis of a disposition underwrites its existence independent of any awareness, so interest in the realizations of a disposition underwrites its existence as a capability independent of any awareness of this interest. There are many dispositions , for example dispositions of many of the cells in our bodies, of which we are not aware. And thus, given that we have an interest in the functioning of these cells, there are many capabilities of which we are not aware. Sam's pancreas bears a function to produce insulin. Sam has an interest in this function being realized. But Sam need not have any accompanying knowledge associated with producing insulin.

EXCERPT #HVCZ94 p. 11
  That dispositions are capabilities may be discovered. In 1971 an organization called 'Federal Express' was created, with the function to deliver parcels. In the year 2000 there was founded a new organization in the Fedex family, organization that has since 2009 been titled 'Fedex Logistics'. FedEx, it transpired, had been providing logistics services for many years, but did not at first realize that it was in possession of a separable logistics capability from the exercise of which it could make money [38].

SECTION #R2PBJD 4.7. Objections and Responses

EXCERPT #TN3X6A p. 11
  One criticism of our proposal is that it would seem to depart from the scientific orientation of BFO because it is not morally neutral. It seems, in some way, to make 'being a capability' rest on a distinction among dispositions between the good and the bad. To see that this is not so, consider the case of a human being who is a functional sociopath. He lacks a conscience and is willing and able to kill with impunity. This lack of a conscience is not, from your and our perspective, a capability . But from the perspective of a drug cartel mercenary army the underlying dispositions are most surely capabilities . Whether a disposition is or is not a capability may in this way depend on the interests of the parties involved.

EXCERPT #745KPD p. 11
  We note that a parallel concern arises also in the case of roles . Many roles are by their nature social constructions; they depend on institutions and groups, and new roles – the role of picciotti d'onore of the 'Ndrangheta, for example – may be created and assigned in morally neutral or morally loaded ways. 15 Both role and capability capture complex phenomena limited only by the creativity of human beings. These facts are not in conflict with the scientific basis of BFO. Even so, one may still object that, according to our proposal, capabilities may be created too easily , almost effortlessly, simply by someone's having an interest in realizations of a certain type. In response, note that there are, importantly, constraints on the sorts of dispositions in which we can have an interest. First, having an interest implies something like having a stake in some object's future destiny – your daughter, for example, but not the twin Earth counterpart of your daughter. Second, interest in is always de re , and not merely de dicto . If I have an interest in eliminating a squeak in a door hinge and some substance exists in the world with lubricating dispositions , it does not follow that those dispositions are now capabilities . My interest is in processes realizing the elimination of the squeak in this door hinge that are within the realm of what I can bring about causally. Thus, while interest in is the ultimate arbiter of whether a disposition is a capability , the specificity of interest is a delimiting factor.

EXCERPT #PVSVPK p. 11
  One may object that it is unreasonable to accept that any disposition, without undergoing any change, can suddenly transform into a capability . A change does occur,

EXCERPT #HGW8ZC p. 11
  15 Note that there are cases of 'apparent' role assignment, as described in this story, told of the philosopher Wittgenstein: "On one walk he 'gave' to me each tree that we passed, with the reservation that I was not to cut it down or do anything to it, or prevent the previous owners from doing anything to it ... it was henceforth mine ." [39]

EXCERPT #35X7PX p. 12
  however; for as a result of this transformation the disposition gains a relation to the salient organism or group of organisms that it did not have before. It should, moreover, be no surprise that the class of capabilities represents an easily expandable terrain. Our interests are vast and varied. If my enemies have an interest in my death and I have a cancerous tumor in my brain, then the tumor bears dispositions that my enemies have an interest in seeing realized. Under these circumstances my tumor bears capabilities . This is as it should be. On the other hand, I have numerous dispositions in whose realization no one has an interest, my enemies included, and so these are not capabilities . This, too, is as it should be.

DOCUMENT #3TZK66
Capabilities: An Ontology

SECTION #2DTZPR 5. Conclusion

EXCERPT #QDWKMG p. 12
  We propose an ontological characterization of ‘capability’ as a first step towards ameliorating some of the problems caused by the uncontrolled use of this term and its manifold synonyms in a variety of domains. We provide a definition for capability and elucidation of the interest in relation within the BFO context. We argued that the proper placement of capability is between the BFO classes disposition and function . Functions are capabilities ; capabilities are dispositions . Despite these results, the complexity of capabilities warrants further analysis. Though we are not suggesting capability be included within the BFO hierarchy, we offer the present characterization of capabilities to the BFO community as a resource for modeling this pervasive phenomenon.

### 53. Tool result: read

DOCUMENT #SF7KYZ
About the Unreal

SECTION #KUKRU3 1. Information and Aboutness

EXCERPT #BS6VHZ p. 0
  Information consists in – at a minimum – copyable patterns that are about something [1–7]. A line of ants that by happenstance form the image of your mother is a copyable pattern. It is not, however, about anything [8]. Such a line could, of course, be about something; then, however, you and your cognitive attitudes must arguably be involved [2, 9]. This is to say that there are copyable patterns that are, and copyable patterns that are not, about something. Examples of the former include familiar fare such as coordinate systems, coding paradigms, the content of novels, paintings, poems, and so on. Examples of the latter include brick walls, a single quote mark, a lone universal quantifier, and so on.

EXCERPT #SYAQEY p. 0
  While there are threads worth untangling with respect to information thus understood [9], there is a larger Gordian Knot deserving attention. We will focus here on types of copyable patterns that purport to be about something that, in some sense, does not exist or indeed may never exist. Considerable ink has been spilled on this and adjacent topics from the pens of philosophers [10–16], logicians [17–19], and ontologists [20, 21]. Our discussion here falls within the discipline of ontology engineering; more specifically, formal implementations within that field. We thus leave aside concerns over identity conditions, essences, modality, putative possible worlds, and the like, aiming

EXCERPT #63DLZC p. 0
  Proceedings of the Joint Ontology Workshops (JOWO) - Episode XI: The Sicilian Summer under the Etna, co-located with the 15th International Conference on Formal Ontology in Information Systems (FOIS 2025), September 8-9, 2025, Catania, Italy

EXCERPT #ZK2RY9 p. 0
  * Corresponding author.

EXCERPT #QYX85Q p. 0
  ✉ johnbeve@buffalo.edu (J. Beverley); jlogan@ontogenesis-solutions.com (Jim Logan);

EXCERPT #CVFCQY p. 0
  bfomis@gmail.com (Barry Smith)

EXCERPT #JXQCKP p. 0
  Copyright © 2025 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

EXCERPT #BZJ28R p. 1
  instead for easily implementable guidance that respects intuitions – both from common sense and from domain experts – regarding such entities. Our proposal is thus to be judged on the basis of whether it provides a formally consistent and practically implementable characterization of the target phenomenon: copyable patterns that purport to be about something that, in some sense, does not exist or indeed may never exist.

DOCUMENT #SF7KYZ
About the Unreal

SECTION #ELQQVT 2.4 Connecting Themes

EXCERPT #5L4LV7 p. 2
  There are of course many other similarities and differences across these cases. For example, our everyday cognitive attitudes and conversations involve the uses of expressions which involve engagement of imagination. From another direction, fiction neither describes how the actual world is nor prescribes how one wants the world to be. In contrast, blueprints are often prescriptions for how one wants the world to be, while simulations are often descriptions about how the world could be. Simulations do often

EXCERPT #QWG8FT p. 2
  1 Compare Searle and Vanderveken on mind-to-world and world-to-mind directions of fit [32].

EXCERPT #Q93Y7N p. 3
  involve prescriptions also, as when they are used to inform decisions about what would have to be done should certain conditions obtain.

EXCERPT #HEG6H9 p. 3
  Expressions about fictional entities are not directed to the future, but blueprints and simulations are. Blueprints are often about desired or desirable outcomes, whereas simulations are often about undesirable outcomes and subsequent planning in the event such outcomes are realized. Simulations are thus characteristically associated with probabilities or likelihoods. While these differences are important, it remains the case that expressions found in all the mentioned cases are connected by relativization to some special context. 2

EXCERPT #YRZKQ7 p. 3
  Another theme worth highlighting is that expressions stemming from each case are often interpreted in natural language as referencing some instance or some individual. For example, the expression “Superman wears a red cape” suggests reference to an individual called “Superman.” There are some who talk as if there were some entity denoted by “Superman”, for example they hold that the referent of this expression is a concept, or some other mental particular [36, 37]. But it is not a concept that wears, or is held to wear, a red cape. There is however an aspect of such expressions which does indeed involve reference to entities that exist in the real world, namely to entities existing at the level of types rather than of instances . Expressions such as “Superman wears a red cape” are about familiar, actual entity types such as Wearing 3 , and Redness , and Cape , where an actual entity type is a type which is or has been instantiated. And there are numerous examples of all the mentioned types in this the actual world.

EXCERPT #CCRDKZ p. 3
  These remarks apply just as well to implicit reference in fictional sentences, such as “Superman is from the planet Krypton”, where there is reference to types such as Planet , Rocky , Watery , and so on. There is however no reference to any entity denoted by the term “Krypton”, because there is no such entity. Similarly, simulations about red teaming exercises involve references to types such as Bot Network that have actual instances; an instance of Blueprint for a planned Honda Civic SLS 2035 may refer to Steering Wheel and Portion of Metal , instances of which, again, exist.

EXCERPT #P5GFG6 p. 3
  We can thus accept that each of our examples (comics, blueprints, and so forth) are about something even where they involve no reference to specific instances in the actual world. Indeed, it would be quite odd, we claim, to assert that Samantha creates a blueprint for a Honda Civic SLS 2035 instance , prior to any such vehicle being manufactured. Such a commitment opens the door to questions such as “To which instance does the blueprint then refer?”

EXCERPT #E7UPEQ p. 3
  There is another sense in which the actual world harbors much more than we can faithfully represent than is achievable through fiction, blueprints, or simulations. For in each case the information artifacts in question exhibit loci of indeterminacy [16]. There is no answer to the question “What was Superman’s grandmother’s eye color?” because this topic was never addressed in the Superman narrative. If Superman existed, however, this question would have an answer, and this regardless of whether it is or is not known by anyone. As diligent as Samantha is in construction of a blueprint for her new model, there will be dimensions of variability between what is specified in her plan and any actual vehicles produced. Red- and blue-teaming simulations, similarly, cannot hope to

EXCERPT #Y97YGY p. 3
  2 Most, if not all, expressions are evaluated according to some context, e.g. “The refrigerator is empty” is relativized to my refrigerator on the one hand and to some amorphous level of granularity on the other. It would be inappropriate for one to respond, “There are molecules in your refrigerator.”

EXCERPT #VK7LN2 p. 3
  3 We adopt the convention of displaying ontology classes capitalized in bold, relations are italicized, and instances underlined.

EXCERPT #3NY5RM p. 4
  characterize all unknown unknowns. The contexts in relation to which they are defined are necessarily incompletely specified.

DOCUMENT #SF7KYZ
About the Unreal

SECTION #VRXLVM 4. Unreal Patterns

EXCERPT #NMWLSA p. 5
  Our central idea is that expressions putatively about non-existent entities should be modeled as Information Content Entities that are ultimately about – not non-existent dummy instances – but rather logical combinations of actual classes . Logical combinations within scope include the intersections, unions, and negations of classes, as described in the logical vocabulary for OWL2DL; what makes a class “actual” in the intended sense is that it is or has been instantiated.

EXCERPT #3U2DC6 p. 5
  The strategy defended here is inspired by the strategy sketched in [2] to explain how fictional expressions such as “Sherlock Holmes is a cocaine user” can inherit aboutness from components referenced in the expression, such as the string “cocaine” referring to the actual class Portion of Cocaine . It is, moreover, based on the strategy introduced in [5], applied to fictional entities in [39], and discussed in the context of digital twins in [42]. Our proposal differs from previous discussions in several respects. First, we generalize the strategy beyond potentially incorrect health care records [5] and fictional entities [39] to simulations and blueprints (and from there to plans, requirements specifications, government bills, historical documents, and many more). Second, we provide a recursive recipe to decompose representations of relevant scenarios to representations of actual classes – and we do this in more detail than in [2, 42]. Third, rather than adopt a sub-property of is about that signifies fictional entities: as-if about [39], we leverage resources from the Common Core Ontologies (CCO) [44] reflecting relations of describing , prescribing , and representing that allow us to distinguish our scenarios ontologically. Fourth, we expand the strategy to cover object properties reflecting relations that may have no real relata, such as fires eye laser . Fifth, we propose a solution to a puzzle identified in [39] regarding fictional entities and a fortiori to other cases where logical constraints on ontologies are violated.

SECTION #V3H7YJ 4.1 Specializations of Information

EXCERPT #ECLZE5 p. 6
  To illustrate our proposal, we describe a recursive recipe for decomposing Information Content Entities that are not obviously about anything that exist into logical combinations of actual classes. Many of the ingredients have been described already, but we introduce the remaining ingredients here.

EXCERPT #ZHD8A2 p. 6
  CCO provides three sub-properties of is about designed to reflect different attitudes agents may bear in regard to the relations holding between Information Content Entities and Entities which they are about. These object properties provide a foundation on which to represent paradigmatic examples of our cases, without requiring reference to problematic instances. These sub-properties 4 of is about are:

EXCERPT #7L2G26 p. 6
  • \underline{x} describes \underline{y} iff \underline{x} is an Information Content Entity , and \underline{y} is an Entity , such that \underline{x} is about the characteristics by which \underline{y} can be recognized or visualized • \underline{x} prescribes \underline{y} iff \underline{x} is an Information Content Entity and \underline{y} is an entity , such that \underline{x} serves as a rule or guide for \underline{y} if \underline{y} is an Occurrent , or \underline{x} serves as a model for \underline{y} if \underline{y} is a Continuant • \underline{x} represents \underline{y} iff \underline{x} is an instance of Information Content Entity , \underline{y} is an instance of Entity , and \underline{z} is a carrier of \underline{x} , such that \underline{x} is about \underline{y} in virtue of there existing an isomorphism between characteristics of \underline{z} and \underline{y}

EXCERPT #GVRXJD p. 6
  The information content of a newspaper article describes some current event, just as an accident report describes some accident. A blueprint serves as a model for some product, just as a professional code of conduct serves as a set of rules for anyone acting in the corresponding professional role. The content of a photograph represents the photographed entity, just as the content of a transcript represents the verbal interaction transcribed. The sense of “isomorphism” in the definition of represents is relative to the type of entities involved. For example, the arrangement of Napoleon’s body parts in a painting by Jacques Louis David was meant to reflect the actual arrangement of these parts in Napoleon’s body.

EXCERPT #TH54MP p. 6
  With respect to our cases, we maintain that fictional Information Content Entities are best understood as describing some logical arrangement of classes and object properties, ultimately in terms of actual classes. Blueprints, on the other hand, are best understood as Information Content Entities prescribing some arrangement of classes and object properties; and simulations are best understood as representing , insofar as, were the simulated phenomena to exist, so too would a relevant isomorphism.

EXCERPT #XKQJUT p. 6
  4 If R_2 is OWL2DL sub-property of R_1 then any pair \langle \underline{x}, \underline{y} \rangle that is a member of the set R_2 is also a member of the set R_1 . In other words, if \underline{x} describes \underline{y} then \underline{x} is about \underline{y} .

SECTION #6BFXWZ 4.2 Recursive Recipe

EXCERPT #BG34PH p. 7
  With these ingredients in hand, we now turn to our recipe. To provide an ontological representation of an entity that did not, does not and perhaps will never exist:

EXCERPT #NDERFZ p. 7
  1. Introduce an Information Content Entity for the entity, which is not about any actual instance modulo mental representations. 2. Identify classes and object properties which reflect the intended meaning of the Information Content Entity under 1, such as Super Strength , Portion of Metal , Ground Vehicle , Kryptonian , inheres in , continuant part of , fires , and so on. 3. Leverage OWL2DL to assert that the identified Information Content Entity describes/prescribes/represents only a class C that is equivalent to the logical combination of classes and restrictions on object properties articulated in 2, where canonical cases of: a. Fictions are said to describe , b. Blueprints are said to prescribe , c. Simulations are said to represent . 4. For any class or relata of any object property constituting C that has no instance, return to 2 and repeat. 5. Otherwise, when each class and relata of each object property constituting C or class and relata of each object property decomposed from those constituting C has at least one instance, stop.

EXCERPT #QDW9WJ p. 7
  Regarding 3: In OWL2DL, there are only three viable options for relating the relevant Information Content Entity to what it is about , by asserting: universal constraints (all x is about only y ), existential constraints (all x is about some y ), or a direct instance-to-instance (specific x is about specific y ) relation. We can put aside the last, since it would require introducing a “dummy” instance which the relevant Information Content Entity would be about . We can also put aside the existential constraint, which amounts to asserting the relevant Information Content Entity is about some, though no particular, instance. This again runs counter to the intuition that in fiction, blueprints, and simulation relevant Information Content Entities are not necessarily about any given instance, since there often is no such instance. This leaves us with the universal constraint, which amounts to asserting that the relevant Information Content Entity is about only an instance falling within a class.

EXCERPT #P37U4K p. 7
  Importantly, this option neither asserts nor implies that there is such an instance. It requires only that, if there were such an instance , then it would have to be an instance of a class resulting from the logical combination of actual classes and object properties. It is this combination of classes that a relevant instance of Information Content Entity will be about . It is, moreover, only this combination that expressions putatively about such an instance will in fact be about . 5 One might, at this point, balk, given that we seem to have simply replaced “dummy instances” with “dummy classes”. Not quite. What we have done is avoid introducing expressions putatively referring to instances but which in

EXCERPT #F9B7A6 p. 7
  5 We are also not introducing fictitious entities such as Superman as the result of logical combination of classes and object properties. Rather, we are asserting the knowledge contained in corresponding text materials can be characterized in terms of such combinations.

EXCERPT #MBFWSK p. 8
  fact do not denote anything, by appealing to logical combinations of classes that themselves consist of instances that exist in the real world.

EXCERPT #33CD5C p. 8
  In every case, classes and object properties must be unpacked into actual classes and object properties that have only actual classes as relata. 6 Object properties are, in this recipe, ultimately explicated in terms of the classes which are their domains and ranges. We now apply this recipe for each of our paradigmatic examples.

SECTION #MVM66N 4.3 Superman

EXCERPT #4GXX9U p. 8
  Because we are dealing with fiction, we leverage the describes relation in our formalization. For simplicity, we introduce a subclass of Information Content Entity (ICE) called Fictional Description , as well as various classes and object properties where needed, at least one of which has no obvious parallel in the actual world. We then have, assuming a standard list of features associated with the character Superman:

EXCERPT #BHY2LT p. 8
  - Superman description instance of Fictional Description and describes only o Person and o described by some Superman Comic and o bearer of some Super Strength and o located in value Earth and o bearer of some Flight Disposition and o has origin value Krypton and o fires eye lasers some Laser and ... - \exists x \text{ fires eye laser } y \text{ iff } x \text{ instance of } \mathbf{Person} \text{ and } \text{has part some } (\mathbf{Eye} \text{ and } \text{bearer of } \mathbf{Laser Firing Disposition}) \text{ and } y \text{ instance of } \mathbf{Laser} \text{ and } \dots - Krypton description instance of Fictional Description and describes only o Astronomical Entity and o bearer of some Rocky Quality and ...

EXCERPT #ZSHVYE p. 8
  At the completion of our recursive application of the recipe, we end with “Superman” being defined ultimately in terms of classes and object properties that have actual instances. For each string putatively referring to some non-actual entity, such as “Krypton”, or to some non-actual relation, such as “fires eye lasers”, we decompose to classes all of which have instances, such as Rocky Quality or Laser .

EXCERPT #FMFF6X p. 8
  Even so, one might wonder what to do if, rather than fires eye lasers , the pertinent object property would be fires laser having a class Eye Laser as its range, a class which has no actual instances. In this case, we would simply leverage the classes Eye and Laser to define the class Eye Laser , which would of course have no instances but would be decomposable into actual classes. This approach can be applied equally to object properties such as fires eye laser with range Eye Laser .

EXCERPT #RYFZAB p. 8
  It has been suggested in [37] that such a recipe falters when fictional characters are represented as engaging with entities that violate constraints of imported ontologies. Following the example of [39], Superman might encounter a ghost which – one might argue – should be classified as a Person having material parts and yet also as an Immaterial Entity having no material parts. In BFO, the class Material Entity is disjoint with the class Immaterial Entity , so such a classification would result on our approach in an inconsistency. As a flat-footed response, note that while authors

EXCERPT #LC3R3J p. 8
  6 Note in most cases the recipe will result in necessary, but rarely sufficient, conditions.

EXCERPT #UYNZ2C p. 9
  might label ghosts as persons, that does not mean ontologists should follow this labeling. Ontology engineers must not let themselves be tricked by mere labels. This is to say that, if there are examples of ghosts classified as persons, then it is plausible that the authors do not mean by “person” an entity with material parts. For such cases, we might introduce a class expression such as “ghost person”, situated outside the material entity hierarchy.

EXCERPT #YN62PB p. 9
  This will only take us so far, of course. Authors of fiction need not abide by ontology best practices. We might envision an author who creates a fictional character that is explicitly a ghost that has no material parts and yet also, simultaneously, has material parts. This is a logical contradiction. Even then, however, there need be no problem for our approach. The relevant hierarchy could be extended to accommodate, perhaps with a subclass of Continuant each instance of which has continuant part some Material Entity and has continuant part some Immaterial Entity . Our hypothesized ghost description would then be about only instances of the Continuant subclass so defined, though this class would remain empty. For such a case, the above recipe will not terminate, which is also as it should be. There are descriptions of logical inconsistencies in the world, but they are not about any instances in the world.

SECTION #HQW3XC 4.4 Honda Civic SLS 2035

EXCERPT #6XTSWZ p. 9
  In explicating the blueprint case, we leverage the prescribes relation in our formalization and introduce a subclass of Information Content Entity called Blueprint .

EXCERPT #Q56F3A p. 9
  - Honda civic SLS 2035 blueprint instance of Blueprint and prescribes only o Ground Vehicle and o has continuant part Engine and o has continuant part Metal Chassis and o has continuant part Seat and o bearer of some Transportation Disposition and o has origin value Tokyo Honda Factory and ...

EXCERPT #NL8VW4 p. 9
  Moreover, any reference within Blueprints to other Blueprints can be characterized by following our decomposition recipe as illustrated with fiction above.

EXCERPT #GSQ5UF p. 9
  There is, however, a remaining question over the relationship such a pattern bears to prescribed entities once they exist. Applying the proposal for digital twins as defined here [42], we say that the Blueprint initially only prescribes that instances be created, though as yet no specific instance of the relevant class exists. Once an instance is created on the basis of the Blueprint , we say that this Blueprint still prescribes new instances to be created but also represents the instance that has already been created. The axioms governing represents in CCO would then entail that the Blueprint in question is a special type of Information Content Entity , namely, a Representational Information Content Entity . This class is not disjoint from its sibling – the domain of prescribes – which is Directive Information Content Entity . In other words, CCO allows for Information Content Entities to both prescribe and represent simultaneously.

SECTION #X9DD7S 4.5 War Games

EXCERPT #KU8Q2V p. 10
  In explicating simulation, we leverage the represents relation in our formalization, as well as a new type of Information Content Entity called Cyber War Game Simulation Representation .

EXCERPT #4FHZWH p. 10
  - Red team simulation representation instance of Cyber War Game Simulation Representation and represents only o Cyber-Attack Process and o has participant value US Army and o has participant Adversary and o has occurrent part ( Act of Targeting and has value Army Network 1 and occupies temporal region value March 23 2025 ) and o has occurrent part Strategic Response Process and ( has participant value US Army Cyber Response Team ) and ( occupies temporal region value March 24, 2025 ) and ...

EXCERPT #DPGLPM p. 10
  One might worry that such hypothetical scenarios could represent contradictory events or impossible strategic responses—for instance, deploying centralized and decentralized defensive tactics simultaneously. Such hypothetical contradictions present no inherent difficulty provided that our representation refrains from enforcing unnecessary mutual exclusivity among these scenario elements, following suggestions similar to those discussed above with respect to fiction.

DOCUMENT #SF7KYZ
About the Unreal

SECTION #7DNJWT 6. Conclusion

EXCERPT #MEY245 p. 11
  We have proposed a practical method for ontologically formalizing information content entities that putatively reference entities which do not exist or may never come to exist. Paradigmatic cases were: fictional entities, blueprints, simulations, and predictions about the future. Each case was explicated by employing specific sub-properties of aboutness, drawn from CCO: describes , prescribes , represents , and designates . Our presentation

EXCERPT #8DL9UM p. 11
  7 The utterance “next Friday” would of course be a different utterance (a species of process ) each week.

EXCERPT #J23SEK p. 12
  here should not suggest these are the only such cases within scope; our recipe applies equally to postulated entities in the natural sciences – such as the Higgs boson – at a time when it is not known whether the relevant entities exist, for example, by defining a combination class Fundamental Particle that is Scalar . Whether this class has instances remained, for a time, unknown. Yet we might argue that there was a time when crucial theoretical work in physics turned precisely on the formulation of hypotheses in its terms.

EXCERPT #TMN983 p. 12
  In this work, we understand information that is putatively not about anything that did, does or perhaps will exist, as Information Content Entities that are about logical combinations of actual classes and object properties, as opposed to hypothetical or non-existent instances. This strategy avoids ontological inconsistencies that arise from competing proposals, such as the introduction of “dummy instances”, and appeals to modal contexts. Moreover, the proposal readily extends across diverse cases. In addressing potential challenges, such as contradictory blueprints or hypothetical scenarios, we maintain that such issues primarily involve labeling rather than structural inconsistencies. By introducing carefully crafted subclasses, it is straightforward to maintain consistency in ontology representations. We intend our unified approach to contribute to resolving longstanding complexities associated with modeling such entities within formal ontologies and look forward to feedback from the broader community on this and related topics.

### 54. Tool result: read

DOCUMENT #GSLMP8
Diagrams, Documents, and the Meshing of Plans

SECTION #UDUTK5 Preamble: From Linear Text to Images

EXCERPT #2XTVT7 p. 0
  Kristóf Nyíri has for some years defended a view of knowledge, communication and tradition which awards a central role to images of different sorts. 2 Where speech and writing are in a certain sense linear (or we might better say unidimensional in time and in space, respectively), images are multi-dimensional, and in Nyíri's eyes this gives them great power. A sequence of images – for example the images displayed in the stained-glass windows of a medieval cathedral, or in a catalogue of structures of protein molecules – is a natural carrier of meaning that can allow messages to be conveyed of a graspable complexity which goes far beyond what could be achieved with speech, or linear transcriptions of speech, alone.

EXCERPT #SCLQAP p. 0
  1 What follows is a transcript of a talk given at the conference on Visual Learning organized by Kristóf Nyíri in Budapest in December, 2013.

EXCERPT #JJY993 p. 0
  2 See for example his “Towards a Philosophy of the Mobile Information Society”, in: Herbert Hrachovec and Alois Pichler, eds., Philosophy of the Information Society , Frankfurt/M.: Ontos, 2008, pp. 149–163.

EXCERPT #XAVG2Y p. 1
  Such collections of images can also clearly serve an important pedagogical purpose, and as we shall see they can also assist in the planning of complex activities and in the communication of complex sets of instructions, as in Figure 1. 3

EXCERPT #5DK6AQ p. 1
  A photograph showing five soldiers in camouflage uniforms gathered around a sand table in a wooded area. They are using sticks and small black markers to plan a mission. One soldier is pointing at the table while others observe or take notes. Figure 1: Officer candidates preparing for a mission on a sand table. Five soldiers in camouflage uniforms are gathered around a sand table outdoors, using sticks and small black markers to plan a mission. One soldier is pointing at the table while others observe or take notes.

EXCERPT #ETYKE3 p. 1
  Figure 1. Officer candidates preparing for a mission on a sand table

EXCERPT #AHJB6M p. 1
  In our own day, of course, communication increasingly involves the use of devices that transmit multimedia messages enjoying a richness and dynamic character not found in the linear document forms which have prevailed hitherto. For Nyíri, indeed, as for Ferraris, 4 the mobile phone is primarily not an instrument for communicating speech at all, but rather a device whose role lies much more in the communication of text, images and videos (soon, also, in effecting financial transactions). For Nyíri, indeed, the mobile phone represents “a new kind of collective thinking”. 5

EXCERPT #5EJ8CD p. 1
  Nyíri has defended, too, a revisionary view of science which awards a central role to images and other forms of non-textual content in scientific communication. In this he finds support in the degree to which, as scientific papers are increasingly being published with on-line links to associated data, including video and audio content. Where, for Bolzano and Frege, as for many contemporary analytical philosophers, science is seen as a matter of propositions (of ‘sentences-in-themselves’ in Bolzano’s terminology), science on the Nyíri view comprehends not only the sorts of assertional content which can be formulated using sentences, but also diagrams, cartoons, photographs, and moving

EXCERPT #SZZ2QB p. 1
  3 From http://en.wikipedia.org/wiki/Officer_Candidate_School_(United_States_Army) . See also http://www.globeslcc.com/wp-content/uploads/media/blog-rotc-mar23-0952-jjensen.jpg .

EXCERPT #5V36YV p. 1
  4 Maurizio Ferraris, “Where Are You? Mobile Ontology”, in: K. Nyíri (ed.), Mobile Understanding: The Epistemology of Ubiquitous Communication , Vienna: Passagen, 2006, 41–53.

EXCERPT #SYKKGW p. 1
  5 “Collective Thinking”, in: Kristóf Nyíri, ed., Mobile Understanding , op. cit., 91–100.

EXCERPT #YAM85Y p. 2
  images. He has used these ideas, too, as the basis for new insights into the work of Wittgenstein, for example on the role of diagrams in rote learning. 6

EXCERPT #RVQME4 p. 2
  Through all these years I have disagreed strongly with Nyíri on all the above points. Now, however, I must confess that Nyíri was in important respects right in his insistence on the inadequacy of a view of human communication, including scientific communication, that is – like the Bolzanian view of science – modeled on linear text.

EXCERPT #EHV4TU p. 2
  In many places, at least, Nyíri has been concerned with the importance of images and other supplements to linear text in describing reality. In what follows I want to focus rather on the deontic or performative ways in which both printed documents and written or spoken language are supplemented by non-linear artifacts in different sorts of human engagement with reality. I want to focus also on a departure from linearity in our use of written and printed language that is not addressed by Nyíri, which arises in virtue of the fact that the documents of central importance for collective activity are combined together to form document networks or complexes of different sorts.

DOCUMENT #GSLMP8
Diagrams, Documents, and the Meshing of Plans

SECTION #3773A5 How To Do Things With Documents

EXCERPT #3P7LB9 p. 2
  Familiarly, speech act theorists such as Reinach, Austin and Searle distinguished between different types of language use. 7 First, we can use language to describe things. Second, we can issue instructions or commands or requests or entreaties designed to bring it about that certain things happen in the future. And third, we can baptize or promote or license people, thereby (roughly) bringing about immediate changes in their status.

EXCERPT #MVYQSA p. 2
  But there are also ways of doing things with documents . 8 Spoken descriptions may be written down and their content published. Agreements of the sort which in former times might have been sealed by handshake are concluded, today, through signatures on a piece of paper. The testimony of a witness before a court, similarly, is captured in a written record, which may in its turn become the object of further legal processes giving rise to further documents which become joined together in document complexes gradually expanding over time. To be skilled in legal process is to have the ability to navigate through a world that is shaped by such evolving complexes of documents.

EXCERPT #XLZ4A7 p. 2
  In writings on speech act theory, the various ways we have of doing things with documents have hitherto been seen (more or less tacitly) as incidental accompaniments to speech. When we look more closely, however, then it becomes clear, that in the law and

EXCERPT #ES4CJR p. 2
  6 As in “Wittgenstein’s Philosophy of Pictures”, in: Alois Pichler and Simo Säätelä, eds., Wittgenstein: The Philosopher and his Works , Wittgenstein Archives at the University of Bergen, 2005, 281–312.

EXCERPT #3NQRHG p. 2
  7 On Reinach see Kevin Mulligan, “Promisings and Other Social Acts: Their Constituents and Structure”, in: Mulligan (ed.), Speech Act and Sachverhalt. Reinach and the Foundations of Realist Phenomenology . The Hague: Nijhoff, 1987, 29–90. See also J. L. Austin, How to Do Things with Words , Cambridge (MA): Harvard University Press, 1962 and John R. Searle, Speech Acts, An Essay in the Philosophy of Language , Cambridge: Cambridge University Press, 1969.

EXCERPT #VEQSC7 p. 2
  8 Barry Smith, “How to Do Things with Documents”, Rivista di Estetica 50, 179–198 and “Document Acts”, in Anita Konzelmann-Ziv and Hans Bernhard Schmid (eds.), Institutions, Emotions, and Group Agents. Contributions to Social Ontology (Philosophical Studies Series), Dordrecht: Springer, in press.

EXCERPT #7V3NRQ p. 3
  in many other areas of human activity, documents – and especially documents joined together in larger document complexes often containing non-textual elements of various kinds – engender new sorts of collaborations between large numbers of human beings and allow human actions to be extended in new sorts of ways across both time and space yielding consequences which would have been unattainable – indeed inconceivable – in a world in which we had to rely on speech and human memory alone.

SECTION #KA3WCC Chemical Diagrams

EXCERPT #L5SB9C p. 3
  Many documents incorporate diagrams or other graphic devices. Maps for instance are incorporated into title deeds and planning applications, and serve to anchor the latter to specific portions of land. Tax forms incorporate rows and columns to facilitate the recording, aggregation, and display of calculations. Your signature on the tax form certifies that you have seen and approved just those calculations which appear on the form. The signature itself then serves a graphic purpose, since it provides not only a record of a dated document act but also a graphic sample, which can be used for example for purposes of comparison where a question arises as to the author of this act.

EXCERPT #BK58R4 p. 3
  It is a commonplace that diagrams – among which I am including arithmetical tables used in rote learning and mathematical equations used in scientific texts – are used in order to communicate knowledge in an easily learnable form. Such diagrams also allow progressively more complex ideas to be expressed and communicated in an easily surveyable form, thereby allowing the formulation and testing of every more ambitious scientific statements.

EXCERPT #MEKNST p. 3
  Diagrams are used also for industrial and scientific purposes for example as parts of protocols, as (in simplified form) in Error! Reference source not found. 9

EXCERPT #QHK65W p. 3
  Chemical structure diagram of a complex molecule. It features a purine base (adenine) connected via a glycosidic bond to a ribose sugar. The ribose is linked to a chain of three phosphate groups, which is further connected to a long alkyl chain ending in a methyl group (CH3). Stereochemistry is indicated with wedges and dashes on the ribose and phosphate groups.

EXCERPT #9E8XX8 p. 3
  9 Image from Janna Hastings, Colin Batchelor, Fabian Neuhaus and Christoph Steinbeck, “What’s in an ‘is about’ link? Chemical diagrams and the Information Artifact Ontology”, Proceedings of the Second International Conference on Biomedical Ontology (ICBO 2011), CEUR, Volume 833, 2011.

EXCERPT #E85AQ4 p. 4
  And as attempts are made to follow the instructions contained in such protocols, multiple further documents will be generated relating to the materials ordered, the different settings used, the results achieved, and so forth.

SECTION #TVEP5V Architectural Diagrams

EXCERPT #BK3ETH p. 4
  And similarly in architecture, when someone submits an order along the lines illustrated (again in simplified form) in Error! Reference source not found. 10

EXCERPT #QNAJ8Y p. 4
  A simplified architectural floor plan of a room. The room has a large open area with two rectangular tables and several chairs. There is a doorway on the right side leading to another area. The walls are represented by thick black lines, and the furniture is shown in simple outlines.

EXCERPT #DAHBZF p. 4
  As this instruction is realized, further documents incorporating descendents of this blueprint will be engendered, some of them incorporating further diagrams with this master blueprint for example of the wiring or ventilation or plumbing for the building. Some of these documents will record commitments made in the successive stages of building, including permissions from local planning authorities, contracts with architects, builders and suppliers of materials, and so forth.

EXCERPT #HLMHSG p. 4
  Typically, of course, matters concerning the role of these and other types of diagrams in the intermeshing of complex plans and subplans, and of the corresponding processes of realizing these plans, are more complicated. The initial blueprint will be accompanied by marginal annotations giving special instructions for example as to placement and quality of materials. To this will gradually be attached more and more supplementary documents, including contracts, planning applications, licenses, permissions, orders, receipts, amendments, approvals, and so forth. These documents themselves become modified and expanded as things go wrong in the building process, for example when it is found that needed materials are no longer available, or that rules governing tolerances for load-bearing walls have not been satisfied, or that fees have not been paid, or that contractors have reneged on their agreement. The blueprint here serves as just one component part of a progressively evolving document complex, which incorporates a representation both of the building which results from the execution of the plan and of the steps taken in this process of execution. These steps will then include a variety of different kinds of physical and document-related sub-processes – of approving plans, ordering and delivering materials, inspecting different aspects of the work done, providing insuring, and so forth

EXCERPT #67HS9H p. 4
  10 From http://www.dezeen.com/2012/09/27/slip-house-by-carl-turner-architects/ . With acknowledgements to dezeen magazine.

EXCERPT #GNDGAB p. 5
  – and they will be concluded (all being well) with a final document act in which you testify with your signature that the building is completed to your satisfaction.

EXCERPT #5CQWPE p. 5
  Here again, we see that to realize a certain complex activity (here: the activity of building a building) those involved need an ability to navigate not merely through the world of actions and people and things but also through an evolving complex of interconnected documents relating to plans and subplans whose intermeshing will often be achieved through the incorporation of intermeshed diagrammatic elements.

EXCERPT #F9GCBV p. 5
  Something similar holds across an even broader compass where the issue relates not to a single building but rather to the planning of entire neighborhoods and regions. Here the intermeshing will be achieved not least through the incorporation of cartographic elements, for example to map layers relating to geology, soil type, land use, water run-off, air quality, transport, and so forth.

DOCUMENT #GSLMP8
Diagrams, Documents, and the Meshing of Plans

SECTION #GC3Z5S Conclusion

EXCERPT #WVXLAR p. 12
  I have focused in the above on the two-fold way in which human beings transcend the boundaries of linear text (1) by incorporating diagrams into documents, (2) by creating complexes of documents which may be extended in space and evolve and grow through time.

EXCERPT #YRJ78K p. 12
  The thesis, in sum, is that such aggregations of documents are indispensable not only to the workings of the law and finance and urban planning and of musical performance and organized warfare, but to practically all complex human achievements. That is, that without the peculiar phenomenon which is the multi-dimensional intermeshing of documents, many complex structured activities by which human life today is marked, would not exist. Documents provide for what we can think of as a division of intellectual, instructional, and deontic labour, allowing plans, orders, and obligations to be enmeshed together in a way that mobilizes multiple groups of individuals to coordinated action, while at the same time allowing the investment in human and other sorts of capital that such coordinated actions require.

EXCERPT #JY3LET p. 12
  Collections of intermeshed documents allow collective actions that are of a much larger scale and able to embrace much larger and much more diverse groups of people than would be possible on the basis of mere speech, and while I have concentrated in the above on supplements to written and spoken language which involve documents of traditional sorts, primarily printed documents, I hope that it is clear that much of what has been said applies with even greater force – and with even greater potentiality for engendering radical changes in the ways we engage with reality – to e-documents. This, however, is a story for another day.

### 55. Assistant tool calls

#### Tool call: `generate_image`

```json
{
  "prompt": "Portrait 3:4 editorial cover artwork for a philosophy paper about granular partitions and realism. A monumental alpine mountain seen through several translucent nested cartographic grids at different resolutions; one layer isolates the whole mountain, another reveals rock strata, snow, rabbits, and molecular specks near an ambiguous foothill. Some borders glow as natural seams while others are crisp human-drawn survey lines. Sophisticated conceptual collage, restrained cobalt, slate, snow white, and vermilion accents, fine paper texture, precise geometric composition, museum-quality, no words, no letters, no typography."
}
```

#### Tool call: `generate_image`

```json
{
  "prompt": "Portrait 3:4 conceptual editorial artwork for environmental metaphysics. Cross-sectional cave landscape built as a beautiful nested double-hole structure: a bear as tenant, luminous breathable air as medium, rock walls as retainer, with the cave mouth completed by a subtle dotted boundary of light. The outer landscape hints at water, vegetation, weather, and ecological flows. Elegant scientific-surreal illustration, moss green, mineral gray, amber and pale cyan, tactile cut-paper depth, calm and intellectually precise, no words, no letters, no labels."
}
```

#### Tool call: `generate_image`

```json
{
  "prompt": "Portrait 3:4 abstract philosophy cover about boundaries and mereotopology. Two smooth solids, one deep red and one emerald green, touch at a single luminous point where two infinitesimal boundary layers visibly coincide without merging; nearby, a plane unfolds into a line and then a point, all suspended in dark ivory space. The composition evokes continuum, contact, coincidence, points, lines, surfaces, and dependent boundaries. Rigorous geometric surrealism, fine engraved detail with modern 3D light, black, ivory, red, green, and gold, no text or symbols."
}
```

#### Tool call: `generate_image`

```json
{
  "prompt": "Portrait 3:4 conceptual cover artwork about whether mountains exist. One mountain transitions across the image from a familiar named object with a recognizable silhouette into a continuous topographic elevation field of contour lines, runoff gradients, erosion channels, and raster cells; its lower boundary dissolves ambiguously into hills and plain. Human-scale hikers and a GIS-like translucent terrain mesh suggest common-sense and scientific perspectives. Refined cartographic art, alpine blue, ochre, sage, and mist white, no words, no labels, no typography."
}
```

#### Tool call: `generate_image`

```json
{
  "prompt": "Portrait 3:4 editorial artwork for a formal theory of granular partitions. A luminous hierarchical tree of nested cells projects like a transparent Renaissance perspective grid onto a richly detailed world containing an orchestra, map fragments, organisms, and catalogued objects. Some cells precisely match objects, some remain empty, and finer details fade below the chosen granularity. Blend mathematical clarity with poetic realism, ink lines and translucent glass planes, midnight blue, warm cream, cyan, and coral, intricate but orderly, no words, no letters, no equations."
}
```

#### Tool call: `generate_image`

```json
{
  "prompt": "Portrait 3:4 conceptual ontology cover about capabilities. A central material form combining human hand, machine joint, rabbit lung, and tool contains many dormant glowing potentials; selected potential pathways ignite into realized processes because fine golden threads connect them to living beings' goals and interests. Show the distinction between latent disposition, realized action, and function through elegant layered motion trails. Contemporary scientific surrealism, deep indigo, graphite, electric teal, and gold, polished editorial quality, no words, no labels, no typography."
}
```

#### Tool call: `generate_image`

```json
{
  "prompt": "Portrait 3:4 conceptual cover about representing the unreal in formal ontology. Three translucent information artifacts—a comic panel, architectural blueprint sheet, and simulation screen—hover above empty spaces where fictional or future individuals would be; instead, luminous threads decompose their contents into a constellation of actual generic forms: person, cape, metal, vehicle, planet, laser, process. Empty silhouettes remain deliberately unfilled. Elegant digital collage, violet, ultramarine, white, and warm orange, precise recursive visual structure, no readable text, no letters, no logos."
}
```

#### Tool call: `generate_image`

```json
{
  "prompt": "Portrait 3:4 conceptual editorial cover about diagrams, documents, and coordinated plans. A dense but elegant network of intermeshing documents—architectural plan, orchestral score-like marks without readable notation, chemical diagram-like shapes, maps, permits, signatures abstracted as gestures—connects many distant people into one coordinated construction and performance. Paper sheets fold into a multidimensional civic machine spanning space and time. Sophisticated mixed-media collage, cream paper, black ink, blueprint blue, red seals, and brass accents, dynamic yet legible, no readable words, no typography."
}
```

### 56. Tool result: generate_image

GENERATED IMAGE #5ZCCTD
URL: /images/5ZCCTD
Model: gpt-image-2
Prompt: Portrait 3:4 editorial cover artwork for a philosophy paper about granular partitions and realism. A monumental alpine mountain seen through several translucent nested cartographic grids at different resolutions; one layer isolates the whole mountain, another reveals rock strata, snow, rabbits, and molecular specks near an ambiguous foothill. Some borders glow as natural seams while others are crisp human-drawn survey lines. Sophisticated conceptual collage, restrained cobalt, slate, snow white, and vermilion accents, fine paper texture, precise geometric composition, museum-quality, no words, no letters, no typography.

### 57. Tool result: generate_image

GENERATED IMAGE #7HJXFH
URL: /images/7HJXFH
Model: gpt-image-2
Prompt: Portrait 3:4 conceptual editorial artwork for environmental metaphysics. Cross-sectional cave landscape built as a beautiful nested double-hole structure: a bear as tenant, luminous breathable air as medium, rock walls as retainer, with the cave mouth completed by a subtle dotted boundary of light. The outer landscape hints at water, vegetation, weather, and ecological flows. Elegant scientific-surreal illustration, moss green, mineral gray, amber and pale cyan, tactile cut-paper depth, calm and intellectually precise, no words, no letters, no labels.

### 58. Tool result: generate_image

GENERATED IMAGE #54S3WZ
URL: /images/54S3WZ
Model: gpt-image-2
Prompt: Portrait 3:4 abstract philosophy cover about boundaries and mereotopology. Two smooth solids, one deep red and one emerald green, touch at a single luminous point where two infinitesimal boundary layers visibly coincide without merging; nearby, a plane unfolds into a line and then a point, all suspended in dark ivory space. The composition evokes continuum, contact, coincidence, points, lines, surfaces, and dependent boundaries. Rigorous geometric surrealism, fine engraved detail with modern 3D light, black, ivory, red, green, and gold, no text or symbols.

### 59. Tool result: generate_image

GENERATED IMAGE #LWT46A
URL: /images/LWT46A
Model: gpt-image-2
Prompt: Portrait 3:4 conceptual cover artwork about whether mountains exist. One mountain transitions across the image from a familiar named object with a recognizable silhouette into a continuous topographic elevation field of contour lines, runoff gradients, erosion channels, and raster cells; its lower boundary dissolves ambiguously into hills and plain. Human-scale hikers and a GIS-like translucent terrain mesh suggest common-sense and scientific perspectives. Refined cartographic art, alpine blue, ochre, sage, and mist white, no words, no labels, no typography.

### 60. Tool result: generate_image

GENERATED IMAGE #RGNNJ8
URL: /images/RGNNJ8
Model: gpt-image-2
Prompt: Portrait 3:4 editorial artwork for a formal theory of granular partitions. A luminous hierarchical tree of nested cells projects like a transparent Renaissance perspective grid onto a richly detailed world containing an orchestra, map fragments, organisms, and catalogued objects. Some cells precisely match objects, some remain empty, and finer details fade below the chosen granularity. Blend mathematical clarity with poetic realism, ink lines and translucent glass planes, midnight blue, warm cream, cyan, and coral, intricate but orderly, no words, no letters, no equations.

### 61. Tool result: generate_image

GENERATED IMAGE #JZTHCJ
URL: /images/JZTHCJ
Model: gpt-image-2
Prompt: Portrait 3:4 conceptual ontology cover about capabilities. A central material form combining human hand, machine joint, rabbit lung, and tool contains many dormant glowing potentials; selected potential pathways ignite into realized processes because fine golden threads connect them to living beings' goals and interests. Show the distinction between latent disposition, realized action, and function through elegant layered motion trails. Contemporary scientific surrealism, deep indigo, graphite, electric teal, and gold, polished editorial quality, no words, no labels, no typography.

### 62. Tool result: generate_image

GENERATED IMAGE #73TUDX
URL: /images/73TUDX
Model: gpt-image-2
Prompt: Portrait 3:4 conceptual cover about representing the unreal in formal ontology. Three translucent information artifacts—a comic panel, architectural blueprint sheet, and simulation screen—hover above empty spaces where fictional or future individuals would be; instead, luminous threads decompose their contents into a constellation of actual generic forms: person, cape, metal, vehicle, planet, laser, process. Empty silhouettes remain deliberately unfilled. Elegant digital collage, violet, ultramarine, white, and warm orange, precise recursive visual structure, no readable text, no letters, no logos.

### 63. Tool result: generate_image

GENERATED IMAGE #CH42GJ
URL: /images/CH42GJ
Model: gpt-image-2
Prompt: Portrait 3:4 conceptual editorial cover about diagrams, documents, and coordinated plans. A dense but elegant network of intermeshing documents—architectural plan, orchestral score-like marks without readable notation, chemical diagram-like shapes, maps, permits, signatures abstracted as gestures—connects many distant people into one coordinated construction and performance. Paper sheets fold into a multidimensional civic machine spanning space and time. Sophisticated mixed-media collage, cream paper, black ink, blueprint blue, red seals, and brass accents, dynamic yet legible, no readable words, no typography.

### 64. Assistant tool calls

#### Tool call: `update_document_metadata`

```json
{
  "cover_image_id": "5ZCCTD",
  "document_id": "XYERFR",
  "micro_abstract": "Explains how context-sensitive, coarse-grained partitions guide reference and perception while preserving transitive parthood and distinguishing fiat demarcations from boundaries grounded in reality."
}
```

#### Tool call: `update_document_metadata`

```json
{
  "cover_image_id": "7HJXFH",
  "document_id": "56MWAA",
  "micro_abstract": "Develops an ontology of token niches as tenant–medium–retainer structures, using physical and fiat boundaries to explain environmental fit, protection, movement, and niche construction."
}
```

#### Tool call: `update_document_metadata`

```json
{
  "cover_image_id": "54S3WZ",
  "document_id": "7YZU95",
  "micro_abstract": "Reconstructs and extends the Brentano–Chisholm mereotopology in which dependent, coincident boundaries account for contact and the continuum across points, lines, surfaces, and bodies."
}
```

#### Tool call: `update_document_metadata`

```json
{
  "cover_image_id": "LWT46A",
  "document_id": "M8BQ3S",
  "micro_abstract": "Argues that mountains are object-like in everyday thought but elevation fields in environmental science, motivating a geospatial ontology that supports both perspectives."
}
```

#### Tool call: `update_document_metadata`

```json
{
  "cover_image_id": "RGNNJ8",
  "document_id": "FQCWKV",
  "micro_abstract": "Formalizes granular partitions as hierarchical cell systems projected onto reality, combining cognitive selectivity with mereological structure for naming, classifying, mapping, and representation."
}
```

#### Tool call: `update_document_metadata`

```json
{
  "cover_image_id": "JZTHCJ",
  "document_id": "3TZK66",
  "micro_abstract": "Defines a capability as a disposition in whose realization an organism or group has or had an interest, placing capabilities between dispositions and functions in Basic Formal Ontology."
}
```

#### Tool call: `update_document_metadata`

```json
{
  "cover_image_id": "73TUDX",
  "document_id": "SF7KYZ",
  "micro_abstract": "Models fiction, blueprints, simulations, and other information about unreal entities through logical combinations of actual classes, avoiding commitments to nonexistent dummy instances."
}
```

#### Tool call: `update_document_metadata`

```json
{
  "cover_image_id": "CH42GJ",
  "document_id": "GSLMP8",
  "micro_abstract": "Shows how diagrams and evolving networks of documents mesh plans, obligations, and specialized labor to enable coordinated collective action beyond the limits of linear text."
}
```

### 65. Tool result: update_document_metadata

Updated metadata for #XYERFR: cover_image_id, micro_abstract

### 66. Tool result: update_document_metadata

Updated metadata for #56MWAA: cover_image_id, micro_abstract

### 67. Tool result: update_document_metadata

Updated metadata for #7YZU95: cover_image_id, micro_abstract

### 68. Tool result: update_document_metadata

Updated metadata for #M8BQ3S: cover_image_id, micro_abstract

### 69. Tool result: update_document_metadata

Updated metadata for #FQCWKV: cover_image_id, micro_abstract

### 70. Tool result: update_document_metadata

Updated metadata for #3TZK66: cover_image_id, micro_abstract

### 71. Tool result: update_document_metadata

Updated metadata for #SF7KYZ: cover_image_id, micro_abstract

### 72. Tool result: update_document_metadata

Updated metadata for #GSLMP8: cover_image_id, micro_abstract

### 73. Assistant

I reviewed each paper’s argument and created a distinct conceptual cover. Microabstracts and artworks are now attached:

- **Carving Up Reality** #XYERFR — Granular partitions, context-sensitive reference, and fiat versus bona fide boundaries. Cover #5ZCCTD.
- **Environmental Metaphysics** #56MWAA — Token niches structured by tenant, medium, retainer, and physical or fiat boundaries. Cover #7HJXFH.
- **Boundaries: An Essay in Mereotopology** #7YZU95 — Coincident dependent boundaries as an account of contact and continua. Cover #54S3WZ.
- **Do Mountains Exist?** #M8BQ3S — Mountains as everyday objects versus elevation fields in environmental modeling. Cover #LWT46A.
- **A Theory of Granular Partitions** #FQCWKV — A formal framework connecting hierarchical cell systems, cognition, and reality. Cover #RGNNJ8.
- **Capabilities: An Ontology** #3TZK66 — Capabilities as dispositions whose realization matters to an organism or group. Cover #JZTHCJ.
- **About the Unreal** #SF7KYZ — Modeling fiction, blueprints, and simulations without positing nonexistent instances. Cover #73TUDX.
- **Diagrams, Documents, and the Meshing of Plans** #GSLMP8 — How diagrammatic document networks coordinate complex collective action. Cover #CH42GJ.

### 74. User

let's put these in the ontology folder, there's another one that should be there too i think that's unfoldered now

### 75. Assistant tool calls

#### Tool call: `list_documents`

```json
{}
```

### 76. Tool result: list_documents

FOLDERS
- Accounting Algebra & Property Theory
- Living Structure, Wholeness & Beauty
- Living Structure, Wholeness &amp; Beauty
- ontology
- Procedural Generation & Co-Creation
- Roads, Trails & Movement
- Scenario-Based & Behavioral Programming
- Technology, Scale & Conviviality
- Terrain, Hydrology & Erosion
- Water Simulation & Rendering

Accounting Algebra & Property Theory (4)
- #GANFP9 A Fundamental Duality in the Mathematical and Natural Sciences: From Logic to Biology - 2024 | David Ellerman | 53 pp.
  Micro abstract: Traces an overlooked subset–partition duality—from logic and category theory through entropy and quantum indefiniteness to selectionist and generative mechanisms in biology.
- #NBH3BE Algebraic Models for Accounting Systems - 2010 | Derek J. S. Robinson, José García Pérez, Robert A. Nehmer, Salvador Cruz Rambaud | World Scientific | 255 pp.
  Micro abstract: Develops accounting theory algebraically: balance vectors as modules, transactions as a group, and whole accounting systems as automata with quotients, homomorphisms, and decision algorithms for audit and control.
- #7ESDBJ Economics, Accounting, and Property Theory - 1982 | David P. Ellerman | Lexington Books | 110 pp.
  Micro abstract: Ellerman's vector-accounting monograph: double entry generalized to property vectors ("accounting without valuation"), grounding a property-theoretic account of appropriation, the firm, and goodwill.
- #C8FHDZ On implication and negation in partition logic - 2025 |  , David Ellerman | Open Journal of Mathematical Sciences | 9 pp. | doi:10.30538/oms2025.0250
  Micro abstract: Develops implication as a refinement-sensitive operation on set partitions, showing how relative negation yields local Boolean cores within the non-distributive algebra of partitions.

Living Structure, Wholeness & Beauty (9)
- #MH5J8D Beautimeter: Harnessing GPT for Assessing Architectural and Urban Beauty Based on the 15 Properties of Living Structure - 2025 | Bin Jiang | AI | 12 pp. | doi:10.3390/ai6040074
  Micro abstract: Presents Beautimeter, a GPT-based tool that scores buildings and urban scenes against Christopher Alexander’s 15 properties of living structure to assess their coherence and beauty.
- #XW22YY Generative Codes: The Path to Building Welcoming, Beautiful, Sustainable Neighborhoods - 2005 | Brian Hanson, Christopher Alexander, Maggie Moore Alexander, Michael Mehaffy, Randall Schmidt | Center for Environmental Structure | 21 pp.
  Micro abstract: Argues that living neighborhoods arise from generative codes: ordered, participatory steps that let buildings and public spaces unfold from local people, land, and context.
- #SKRF4C Geography as a Science of the Earth’s Surface Founded on the Third View of Space - 2022 | Bin Jiang | Annals of GIS | 14 pp. | doi:10.1080/19475683.2021.1966502
  Micro abstract: Recasts geography around an organismic view of space, using scaling and spatial dependence to understand—and deliberately create—places with greater living structure.
- #PXG56P Harmony-Seeking Computations: A Science of Non-Classical Dynamics Based on the Progressive Evolution of the Larger Whole - 2009 | Christopher Alexander | Unpublished manuscript | 66 pp.
  Micro abstract: Proposes harmony-seeking computation as a creative process that repeatedly strengthens latent centers in a configuration while preserving and deepening the larger whole.
- #MJKTBB Living Images: A Recursive Approach to Computing the Structural Beauty of Images or the Livingness of Space - 2023 | Bin Jiang, Chris de Rijke | Annals of the American Association of Geographers | 19 pp. | doi:10.1080/24694452.2023.2178376
  Micro abstract: Measures an image’s structural beauty by recursively extracting its nested substructures, revealing a compact hierarchy that also captures visual saliency.
- #3XSLTA Structural Beauty: A Structure-Based Computational Approach to Quantifying the Beauty of an Image - 2021 | Bin Jiang, Chris de Rijke | Journal of Imaging | 15 pp. | doi:10.3390/jimaging7050078
  Micro abstract: Proposes a quantitative measure of structural beauty based on how many substructures an image contains and how strongly they form a hierarchy across scales.
- #ZU8GZV Structure-Preserving Transformations - 2002 | Christopher Alexander | The Nature of Order, Book Two: The Process of Creating Life | 4 pp. | doi:10.2307/j.ctv27ftw6c.5
  Micro abstract: Explains structure-preserving transformations: incremental changes that extend the centers and relationships already present in a place rather than weakening its wholeness.
- #AULNWD The Nature of Poetic Order - 1998 | Richard P. Gabriel | Warren Wilson Alumni Conference, Mount Holyoke | 99 pp.
  Micro abstract: Gabriel's slide essay relating poetry's formal order to Christopher Alexander's ideas of generative structure, exploring how constraint and pattern produce living order in creative work.
- #BYG3BQ Wholeness as a Hierarchical Graph to Capture the Nature of Space - 2015 | Bin Jiang | International Journal of Geographical Information Science | 14 pp. | doi:10.1080/13658816.2015.1038542
  Micro abstract: Models spatial wholeness as a hierarchical graph of mutually reinforcing centers, using PageRank and scaling depth to quantify the life of parts and wholes.

ontology (2)
- #CGE2NC Against Fantology - 2005 | Barry Smith | Experience and Analysis | 22 pp.
  Micro abstract: Critiques the idea that first-order logic reveals reality’s ontology, tracing its atomism, timelessness, Booleanism, and reductionism before proposing a six-category ontology and an enhanced Davidsonian formal language.
- #JZG4PM Against Fantology Again - 2016 | Ingvar Johansson | The Theory and Practice of Ontology | 12 pp.
  Micro abstract: Extends the critique of fantology through default ontologization, arguing that Quine’s canonical notation is incoherent about classes and excludes intentional phenomena and distinct modes of existence.

Procedural Generation & Co-Creation (14)
- #ABD2B8 Between Tech and Art: The Vegetation of Horizon Zero Dawn - 2018 | Gilbert Sanders, Guerrilla Games | Game Developers Conference (GDC) 2018 | 87 pp.
  Micro abstract: A production breakdown of Horizon Zero Dawn’s vegetation pipeline, covering global wind simulation, layered foliage motion, coverage-preserving alpha mipmaps, shading, asset LODs, placement, and cascaded shadows.
- #4TH488 Explainable AI for Designers: A Human-Centered Perspective on Mixed-Initiative Co-Creation - 2018 | Antonios Liapis, G. Michael Youngblood, Jichen Zhu, Rafael Bidarra, Sebastian Risi | 2018 IEEE Conference on Computational Intelligence and Games (CIG) | 8 pp. | doi:10.1109/CIG.2018.8490433
  Micro abstract: Defines explainable AI for game designers, mapping co-creative systems by their explainability, initiative, and domain overlap so explanations serve concrete design tasks.
- #9NQ94D Extracting Physics from Blended Platformer Game Levels - 2020 | Adam Summerville, Anurag Sarkar, Joseph C. Osborn, Sam Snodgrass | Joint Proceedings of the AIIDE 2020 Workshops (CEUR Workshop Proceedings, Vol. 2862) | 7 pp.
  Micro abstract: Infers playable jump physics from generated platformer levels, including hybrid physics models for levels that blend the geometry and style of multiple games.
- #66Q3W3 Ghost of Tsushima: Procedural Grass - 2021 | Eric Wohllaib, Sucker Punch Productions | Game Developers Conference (GDC) 2021 | 55 pp.
  Micro abstract: Explains Ghost of Tsushima’s compute-driven grass pipeline, from tiled placement and culling to indirect drawing, cubic Bézier blade geometry, variable LOD, wind animation, and material shading.
- #QHMFH2 Improved Alpha Testing Using Hashed Sampling - 2019 | Chris Wyman, Morgan McGuire | IEEE Transactions on Visualization and Computer Graphics | 12 pp. | doi:10.1109/TVCG.2017.2739149
  Micro abstract: Develops hashed alpha testing, a stable quasi-random thresholding method that preserves distant alpha-mapped foliage and hair while controlling flicker, anisotropy, and interactions with TAA and alpha-to-coverage.
- #7GR3AQ Procedural Content Generation through Quality Diversity - 2019 | Ahmed Khalifa, Antonios Liapis, Daniele Gravina, Georgios N. Yannakakis, Julian Togelius | 2019 IEEE Conference on Games (CoG) | 8 pp. | doi:10.1109/CIG.2019.8848053
  Micro abstract: Argues for quality-diversity algorithms in procedural generation, producing broad collections of varied, playable content while exposing the design space for exploration and co-creation.
- #CQBDX4 Procedural Content Generation via Machine Learning (PCGML) - 2018 | Aaron Isaksen, Adam Summerville, Amy K. Hoover, Andy Nealen, Christoffer Holmgård, Julian Togelius, Matthew Guzdial, Sam Snodgrass | IEEE Transactions on Games | 15 pp. | doi:10.1109/TG.2018.2846639
  Micro abstract: Defines and surveys PCGML: generating functional game content directly from models trained on existing examples, with uses spanning creation, completion, repair, critique, and compression.
- #EARFEK Procedural Generation of Villages on Arbitrary Terrains - 2012 | Adrien Bernhardt, Adrien Peytavie, Arnaud Emilien, Eric Galin, Marie-Paule Cani | The Visual Computer | 10 pp. | doi:10.1007/s00371-012-0699-7
  Micro abstract: Presents a three-stage procedural model that grows terrain-responsive village roads and settlements, partitions land into plausible parcels, and generates slope-adapted buildings with open shape grammars.
- #EDURTK Real-Time GPU Tree Generation - 2025 | Bastian Kuth, Carsten Faber, Dominik Baumeister, Max Oberberger, Pirmin Pfeifer, Quirin Meyer, Seyedmasih Tabaei | High-Performance Graphics – Symposium Papers | 10 pp. | doi:10.2312/hpg.20251168
  Micro abstract: Introduces a GPU work-graph pipeline that generates, animates, edits, and continuously LODs detailed seasonal trees every frame, replacing gigabytes of baked geometry with kilobytes of parameters.
- #GBXEP3 Realistic Modeling and Rendering of Plant Ecosystems - 1998 | Bernd Lintermann, Matt Pharr, Oliver Deussen, Pat Hanrahan, Przemyslaw Prusinkiewicz, Radomír Měch | Proceedings of SIGGRAPH ’98 | 12 pp. | doi:10.1145/280814.280898
  Micro abstract: Presents a foundational pipeline for authoring plant ecosystems through terrain design, ecological simulation, procedural plant models, approximate instancing, and efficient rendering of billion-primitive scenes.
- #BDBBL6 Real‐time Realistic Rendering and Lighting of Forests - 2012 | Eric Bruneton, Fabrice Neyret | Computer Graphics Forum | 11 pp. | doi:10.1111/j.1467-8659.2012.03016.x
  Micro abstract: Combines detailed z-field trees with terrain shader-maps to render immense forests in real time, preserving sun, sky, canopy, and ground-lighting effects through seamless, scale-consistent transitions.
- #PQ68ZH Responsive Real-Time Grass Rendering for General 3D Scenes - 2017 | Klemens Jahrmann, Michael Wimmer | Proceedings of the 2017 Symposium on Interactive 3D Graphics and Games (I3D ’17) | 10 pp. | doi:10.1145/3023368.3023380
  Micro abstract: Renders every grass blade as responsive tessellated geometry on arbitrary 3D surfaces, with per-blade wind, gravity, and collision physics plus aggressive culling that retains dense fields in real time.
- #WZ8DHP Runtime Evaluation of Procedural Content Generation in an Endless Runner Game Using Autonomous Agents - 2026 | Rishabh Kar | arXiv | 25 pp. | doi:10.48550/arXiv.2605.01783
  Micro abstract: Integrates procedural generation and validation in an endless runner, using aerial and ground agents to detect blocked or unnavigable content before the player reaches it.
- #NRBMD5 Towards Friendly Mixed Initiative Procedural Content Generation: Three Pillars of Industry - 2020 | Frederic Fol Leymarie, Gorm Lai, William Latham | Proceedings of the International Conference on the Foundations of Digital Games (FDG '20) | 4 pp. | doi:10.1145/3402942.3402946
  Micro abstract: Distills three requirements for industry-friendly co-creative PCG tools: preserve designer control, keep feedback loops short, and fit into existing production pipelines.

Roads, Trails & Movement (8)
- #G3TBNG A Sequential Two-Step Algorithm for Fast Generation of Vehicle Racing Trajectories - 2016 | J. Christian Gerdes, John Subosits, Nitin R. Kapania | Journal of Dynamic Systems, Measurement, and Control | 12 pp. | doi:10.1115/1.4033311
  Micro abstract: Generates near-optimal racing trajectories quickly by alternating between a minimum-time speed profile and a convex path update that reduces curvature.
- #B6P8L4 Active walker model for the formation of human and animal trail systems - 1997 | Dirk Helbing, Frank Schweitzer, Joachim Keltsch, Péter Molnár | Physical Review E | 34 pp. | doi:10.1103/physreve.56.2527
  Micro abstract: Models trail systems as self-organization: walkers reinforce attractive routes while unused traces fade, producing dendritic ant trails and low-detour pedestrian networks.
- #V4TQYB Interactive procedural street modeling - 2008 | Eugene Zhang, Gregory Esch, Guoning Chen, Pascal Müller, Peter Wonka | ACM Transactions on Graphics | 10 pp. | doi:10.1145/1360612.1360702
  Micro abstract: Lets designers generate and edit large street networks through tensor fields, combining procedural speed with brush-like global and local control over street patterns.
- #UYLTYJ Modelling the Evolution of Human Trail Systems - 1997 | Dirk Helbing, Joachim Keltsch, Péter Molnár | Nature | 11 pp. | doi:10.1038/40353
  Micro abstract: Shows how pedestrian trails emerge through feedback between destination-seeking walkers, existing paths, and vegetation recovery, yielding a compromise between directness and shared infrastructure.
- #GY93FG Mountain Trail Formation and the Active Walker Model - 2009 | J. P. Hague, S. J. Gilks | International Journal of Modern Physics C | 22 pp. | doi:10.1142/S0129183109014059
  Micro abstract: Extends the active-walker model to steep terrain, explaining zigzag mountain trails through slope avoidance, directional persistence, and mutual reinforcement by ascending and descending walkers.
- #LXV9AT Principles of Trail Layout and Design - 2019 | California State Parks | California State Parks Trails Handbook | 64 pp.
  Micro abstract: A field-oriented guide to durable trail design, emphasizing curvilinear alignment, natural drainage, sustainable grades, control points, and close reading of landform and soils.
- #XDEFZS Procedural Generation of Roads - 2010 | A. Peytavie, E. Galin, E. Guérin, N. Maréchal | Computer Graphics Forum | 10 pp. | doi:10.1111/j.1467-8659.2009.01612.x
  Micro abstract: Automatically routes and constructs roads with an anisotropic shortest-path method that weighs slope and obstacles while treating surface segments, bridges, and tunnels consistently.
- #ARP5U7 The Topography of Minoan Peak Sanctuaries - 1983 | A. A. D. Peatfield | The Annual of the British School at Athens | 8 pp. | doi:10.1017/s0068245400019729
  Micro abstract: Argues that Minoan peak sanctuaries were chosen for visibility and proximity to local settlements, forming a beacon-like sacred network whose contraction tracked settlement abandonment rather than cultic collapse.

Scenario-Based & Behavioral Programming (8)
- #P2W4J5 Adaptive Behavioral Programming - 2011 | David Harel, Nir Eitan | 8 pp. | doi:10.1109/ictai.2011.109
  Micro abstract: Adds reinforcements to live sequence charts and BPJ so scenario-based programs can learn from their environment, specifying goals to pursue and scenarios to avoid, with modular learning decompositions.
- #XQ5NKX Challenges in Modeling and Unmodeling Emergence, Rule Composition, and Networked Interactions in Complex Reactive Systems - 2023 | Assaf Marron, David Harel, Guy Frankel, Irun Cohen, Smadar Szekely | 8 pp. | doi:10.5220/0011728900003402
  Micro abstract: Position paper on modeling emergence, rule composition, and networked interactions in complex reactive systems, introducing "unmodeling"—explicitly excluding entities and behaviors from model execution.
- #D4VB7S Distributing Scenario-Based Models: A Replicate-and-Project Approach - 2017 | Assaf Marron, Daniel Gritzner, David Harel, Guy Katz, Joel Greenyer, Shlomi Steinberg | MODELSWARD 2017 | 16 pp. | doi:10.5220/0006271301820195
  Micro abstract: Distributes scenario-based models by replicating the full specification on every component and projecting it per component, mimicking centralized behavior while sharply reducing synchronization.
- #CSJARA Enhancing Scenario-Based Modeling Using Large Language Models - 2026 | Assaf Marron, David Harel, Guy Katz, Smadar Szekely | Communications in Computer and Information Science | Springer Nature Switzerland | pp. 43-68 | 26 pp. | doi:10.1007/978-3-031-96841-9_3
  Micro abstract: Extended methodology for combining LLM chatbots with scenario-based modeling: iterative generation of stand-alone scenarios checked by analysis and human review, framed as a step toward Wise Computing.
- #3JCRAD On Augmenting Scenario-Based Modeling with Generative AI - 2024 | Assaf Marron, David Harel, Guy Katz, Smadar Szekely | MODELSWARD 2024 | 12 pp. | doi:10.5220/0012427100003645
  Micro abstract: Outlines a structured method for using generative-AI chatbots in modeling: iteratively generate scenario-based model fragments, then analyze and inspect them to converge on an accurate system model.
- #QV3BWZ On tracing reactive systems - 2011 | David Harel, Shahar Maoz | Software &amp; Systems Modeling | 22 pp. | doi:10.1007/s10270-010-0151-2
  Micro abstract: Introduces model-based trace visualization and exploration for reactive systems, using scenario-based (LSC) abstractions and the Tracer prototype, demonstrated on a PacMan game.
- #TDS4H2 Relaxing Synchronization Constraints in Behavioral Programs - 2013 | Amir Kantor, David Harel, Guy Katz | LPAR 2013 (Logic for Programming, Artificial Intelligence, and Reasoning) | 17 pp. | doi:10.1007/978-3-642-45221-5_25
  Micro abstract: Proposes eager execution for behavioral programs: fast b-threads run ahead when synchronization outcomes are predictable, improving performance, modularity, and distributability, shown in a C++ BP framework.
- #M5788P Towards Behavioral Programming in Distributed Architectures - 2015 | Amir Kantor, Assaf Marron, David Harel, Gera Weiss, Guy Katz, Guy Wiener | Science of Computer Programming | 58 pp. | doi:10.1016/j.scico.2014.03.003
  Micro abstract: Extends behavioral programming to distributed architectures: b-threads as Erlang processes, eager execution to relax synchronization, and modular distributed execution, demonstrated on simulations and a quadrotor.

Technology, Scale & Conviviality (2)
- #WYH36B The City as Convivial Centre - 1974 | Leopold Kohr | Tract, no. 12 (Gryphon Press) | 18 pp.
  Micro abstract: Kohr's essay arguing that cities exist for convivial life rather than economic function, and that human-scale size is what lets a city serve as a centre of leisure, culture, and encounter.
- #67REFX The Question Concerning Technology - 1977 | Martin Heidegger | The Question Concerning Technology and Other Essays (Harper & Row) | 23 pp.
  Micro abstract: Heidegger's essay on the essence of technology as Enframing (Gestell), a mode of revealing that reduces the world to standing-reserve, and on art as a possible saving power.

Terrain, Hydrology & Erosion (8)
- #NV2YRW FastFlow: GPU Acceleration of Flow and Depression Routing for Landscape Simulation - 2024 | Aryamaan Jain, Bernhard Kerbl, Brandon Finley, Guillaume Cordonnier, James Gain | Computer Graphics Forum | 13 pp. | doi:10.1111/cgf.15243
  Micro abstract: A GPU framework for routing surface flow through terrain and its depressions fast enough to make erosion, river, lake, and ecosystem simulations interactive.
- #2284QZ From features to fingerprints: A general diagnostic framework for anthropogenic geomorphology - 2019 | Damian Evans, Erle C Ellis, Giulia Sofia, Paolo Tarolli, Wenfang Cao | Progress in Physical Geography: Earth and Environment | 34 pp. | doi:10.1177/0309133318825284
  Micro abstract: Integrates geomorphology, archaeology, and high-resolution remote sensing into a framework for reading anthropogenic landforms as landscape-scale sociocultural fingerprints.
- #96ZMGK Large Scale Terrain Generation from Tectonic Uplift and Fluvial Erosion - 2016 | Adrien Peytavie, Bedrich Benes, Guillaume Cordonnier, Jean Braun, Marie-Paule Cani, Éric Galin, Éric Guérin | Computer Graphics Forum | 11 pp. | doi:10.1111/cgf.12820
  Micro abstract: Generates large, controllable mountain terrains by coupling user-painted tectonic uplift with fluvial erosion, then turning the resulting stream graph into detailed landforms.
- #K82AS7 Legacy sediment: Definitions and processes of episodically produced anthropogenic sediment - 2013 | L. Allan James | Anthropocene | 11 pp. | doi:10.1016/j.ancene.2013.04.001
  Micro abstract: Broadens legacy sediment to episodically produced anthropogenic alluvium and colluvium, and explains its deposition, storage, and remobilization through sediment delivery–transport capacity dynamics.
- #DWXKYQ Physically-based analytical erosion for fast terrain generation - 2024 | Boris Gailleton, Guillaume Cordonnier, Petros Tzathas, Philippe Steer | Computer Graphics Forum | 14 pp. | doi:10.1111/cgf.15033
  Micro abstract: Turns the stream power law into an interactive terrain tool, replacing thousands of erosion time steps with analytical solutions and a direct control for landscape age.
- #MTDKDE Priority-Flood: An Optimal Depression-Filling and Watershed-Labeling Algorithm for Digital Elevation Models - 2014 | Clarence Lehman, David Mulla, Richard Barnes | Computers & Geosciences | 17 pp. | doi:10.1016/j.cageo.2013.04.024
  Micro abstract: Introduces Priority-Flood, a simple, optimal algorithm that removes drainage-blocking depressions from elevation models and can also derive watersheds and flow directions.
- #AK7NGE Procedural Riverscapes - 2019 | A. Peytavie, B. Benes, E. Galin, E. Guérin, J. Gain, T. Dupont, Y. Cortial | Computer Graphics Forum | 12 pp. | doi:10.1111/cgf.13814
  Micro abstract: Builds editable, animated riverscapes from bare terrain by carving hydrologically plausible channels and blending real-time procedural water primitives instead of simulating fluids.
- #DMTA8Y Terrain Generation Using Procedural Models Based on Hydrology - 2013 | Adrien Peytavie, Bedřich Beneš, Jean-David Génevaux, Éric Galin, Éric Guérin | ACM Transactions on Graphics | 10 pp. | doi:10.1145/2461912.2461996
  Micro abstract: Generates controllable, multiscale terrain from a sketched drainage network, representing rivers and landforms as an editable hierarchy of continuous procedural primitives.

Water Simulation & Rendering (12)
- #RBS5K6 A Layered Particle-Based Fluid Model for Real-Time Rendering of Water - 2010 | Daniel Scherzer, Florian Bagar, Michael Wimmer | Computer Graphics Forum | 7 pp. | doi:10.1111/j.1467-8659.2010.01734.x
  Micro abstract: Renders particle-based water and volumetric foam in real time using perspective-aware surface smoothing, physically guided foam formation, and layered depth compositing.
- #C4AY2M A Survey of Ocean Simulation and Rendering Techniques in Computer Graphics - 2011 | B. Crespin, D. Ghazanfarpour, E. Darles, J.-C. Gonzato | Computer Graphics Forum | 17 pp. | doi:10.1111/j.1467-8659.2010.01828.x
  Micro abstract: Surveys ocean graphics from spectral deep-water models to near-shore fluid simulation, then covers the foam, spray, and light transport needed for convincing rendering.
- #WZMZGY Advected river textures - 2009 | Dirk Arnold, Stephen Brooks, Tim Burrell | Computer Animation and Virtual Worlds | 11 pp. | doi:10.1002/cav.288
  Micro abstract: Combines a 2D Navier–Stokes solver, hydrostatic pressure columns, and advected procedural textures to render detailed, terrain-responsive rivers at real-time frame rates.
- #92XRH7 Lagrangian Texture Advection: Preserving both Spectrum and Velocity Field - 2011 |  Qizhi Yu, E. Bruneton, F. Neyret, N. Holzschuch | IEEE Transactions on Visualization and Computer Graphics | 13 pp. | doi:10.1109/tvcg.2010.263
  Micro abstract: Advects fluid textures with deformable particle grids, preserving both the input texture’s visual spectrum and exact motion along the velocity field without cumulative stretching.
- #8SERGP Real-time Breaking Waves for Shallow Water Simulations - 2007 | Markus Gross, Matthias Müller-Fischer, Nils Thürey, Simon Schirm | 15th Pacific Conference on Computer Graphics and Applications (Pacific Graphics 2007) | 8 pp. | doi:10.1109/PG.2007.33
  Micro abstract: Adds real-time overturning waves to shallow-water heightfields by detecting steep fronts and spawning connected particle sheets that collapse into splashes and foam.
- #CWC7H9 Real-time Rendering of Enhanced Shallow Water Fluid Simulations - 2013 | Antonio Susín, Jesús Ojeda | Computers & Graphics | 9 pp.
  Micro abstract: Builds a real-time rendering pipeline for shallow-water simulations, adding fine surface detail, advected foam, photon-based caustics, and screen-space reflection and refraction.
- #MVUJ8Z Real-time Rendering of River Networks - 2010 | Quintijn Hendrickx, Rafael Bidarra, Ruben M. Smelik | Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games | 1 pp.
  Micro abstract: Renders branching river networks efficiently with quadratic Bézier curves, GPU distance fields, and streaming normal maps instead of dense geometry or particle simulation.
- #5MGCZ5 Real-time River Representation by Dynamic Control of Data on Waves - 2008 | Makoto Kosugi, Nobuhiko Mukai, Yasuhiro Kato | 4 pp. | doi:10.3169/itej.62.2063
  Micro abstract: Dynamically switches river-wave models by viewing distance, preserving nearby reflection and wave detail while retaining wind-driven motion across the full landscape.
- #XDESU9 Scalable real‐time animation of rivers - 2009 | Eric Bruneton, Fabrice Neyret, Nicolas Holzschuch, Qizhi Yu | Computer Graphics Forum | 11 pp. | doi:10.1111/j.1467-8659.2009.01363.x
  Micro abstract: Animates rivers across vast terrains by computing steady flow locally and advecting fine surface detail only where visible, at a screen-space sampling density.
- #869NHK Very Fast Real-Time Ocean Wave Foam Rendering Using Halftoning - 2011 | Ian Parberry, Jennifer R. Alford, Mary Yingst | Proceedings of the 6th International North American Conference on Intelligent Games and Simulation (GAMEON-NA) | 7 pp.
  Micro abstract: Uses a spectrally controlled halftone mask to make texture-based ocean foam dissipate as clumped bubbles that pop, rather than merely fading transparently.
- #A2QB8L Water Flow in Portal 2 - 2010 | Alex Vlachos | ACM SIGGRAPH 2010 Course: Advances in Real-Time Rendering in 3D Graphics and Games | 54 pp.
  Micro abstract: Explains Portal 2’s production-friendly water shader: artist-painted flow maps advect layered normal maps, while offsets and noise suppress repetition and pulsing on limited hardware.
- #PBM2TC Water surface wavelets - 2018 | Chris Wojtan, Matthias Müller-Fischer, Miles Macklin, Nuttapong Chentanez, Stefan Jeschke, Tomáš Skřivan | ACM Transactions on Graphics | 13 pp. | doi:10.1145/3197517.3201336
  Micro abstract: Represents water waves as spatially varying directional amplitudes, enabling vast interactive simulations with fine detail, moving obstacles, solid coupling, and direct artistic control.

Unfiled (10)
- #FQCWKV A Theory of Granular Partitions - 2003 | Barry Smith, Thomas Bittner | Foundations of Geographic Information Science | 33 pp.
  Micro abstract: Formalizes granular partitions as hierarchical cell systems projected onto reality, combining cognitive selectivity with mereological structure for naming, classifying, mapping, and representation.
- #SF7KYZ About the Unreal - 2025 | Barry Smith, Jim Logan, John Beverley | Proceedings of the Joint Ontology Workshops (JOWO), Episode XI | 14 pp.
  Micro abstract: Models fiction, blueprints, simulations, and other information about unreal entities through logical combinations of actual classes, avoiding commitments to nonexistent dummy instances.
- #7YZU95 Boundaries: An Essay in Mereotopology - 1997 | Barry Smith | The Philosophy of Roderick Chisholm | 32 pp.
  Micro abstract: Reconstructs and extends the Brentano–Chisholm mereotopology in which dependent, coincident boundaries account for contact and the continuum across points, lines, surfaces, and bodies.
- #3TZK66 Capabilities: An Ontology - 2024 | Barry Smith, David Limbaugh, Eric Merrell, John Beverley, Peter M. Koch | Proceedings of the Joint Ontology Workshops (JOWO), Episode X | 14 pp.
  Micro abstract: Defines a capability as a disposition in whose realization an organism or group has or had an interest, placing capabilities between dispositions and functions in Basic Formal Ontology.
- #XYERFR Carving Up Reality - 2004 | Barry Smith | Categories: Historical and Systematic Essays | 14 pp.
  Micro abstract: Explains how context-sensitive, coarse-grained partitions guide reference and perception while preserving transitive parthood and distinguishing fiat demarcations from boundaries grounded in reality.
- #GSLMP8 Diagrams, Documents, and the Meshing of Plans - 2013 | Barry Smith | Visual Learning, vol. 3: How to Do Things with Pictures: Skill, Practice, Performance | 14 pp.
  Micro abstract: Shows how diagrams and evolving networks of documents mesh plans, obligations, and specialized labor to enable coordinated collective action beyond the limits of linear text.
- #M8BQ3S Do Mountains Exist? Towards an Ontology of Landforms - 2003 | Barry Smith, David M. Mark | Environment and Planning B: Planning and Design | 22 pp.
  Micro abstract: Argues that mountains are object-like in everyday thought but elevation fields in environmental science, motivating a geospatial ontology that supports both perspectives.
- #56MWAA Environmental Metaphysics - 2001 | Achille C. Varzi, Barry Smith | Metaphysics in the Post-Metaphysical Age: Proceedings of the 22nd International Wittgenstein Symposium | 12 pp.
  Micro abstract: Develops an ontology of token niches as tenant–medium–retainer structures, using physical and fiat boundaries to explain environmental fit, protection, movement, and niche construction.
- #3CV92Z moppe
- #9YMD2E SNAP and SPAN: Towards Dynamic Spatial Ontology - 2004 | Barry Smith, Pierre Grenon | Spatial Cognition & Computation | 35 pp. | doi:10.1207/S15427633SCC0401_5
  Micro abstract: BFO's bicategorial framework: SNAP snapshot ontologies of continuants and a SPAN ontology of processes in spacetime, linked by trans-ontological relations to capture change — demonstrated on the ontology of geodynamics.

### 77. Assistant tool calls

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "XYERFR",
  "folder": "ontology"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "56MWAA",
  "folder": "ontology"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "7YZU95",
  "folder": "ontology"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "M8BQ3S",
  "folder": "ontology"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "FQCWKV",
  "folder": "ontology"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "3TZK66",
  "folder": "ontology"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "SF7KYZ",
  "folder": "ontology"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "GSLMP8",
  "folder": "ontology"
}
```

#### Tool call: `update_document_metadata`

```json
{
  "document_id": "9YMD2E",
  "folder": "ontology"
}
```

### 78. Tool result: update_document_metadata

Updated metadata for #XYERFR: folder

### 79. Tool result: update_document_metadata

Updated metadata for #56MWAA: folder

### 80. Tool result: update_document_metadata

Updated metadata for #7YZU95: folder

### 81. Tool result: update_document_metadata

Updated metadata for #M8BQ3S: folder

### 82. Tool result: update_document_metadata

Updated metadata for #FQCWKV: folder

### 83. Tool result: update_document_metadata

Updated metadata for #3TZK66: folder

### 84. Tool result: update_document_metadata

Updated metadata for #SF7KYZ: folder

### 85. Tool result: update_document_metadata

Updated metadata for #GSLMP8: folder

### 86. Tool result: update_document_metadata

Updated metadata for #9YMD2E: folder

### 87. Assistant

Moved all eight new papers into the **ontology** folder.

I also found and moved the likely missing one: *SNAP and SPAN: Towards Dynamic Spatial Ontology* #9YMD2E. The folder now contains 11 documents.
