{
    "model": {
        "rank": 4490,
        "code": "thing-q213096",
        "model_id": "vr.tr.seashell",
        "name": "seashell",
        "purpose": "Enable an agent to recognise a seashell, assess its biological identity and physical condition, and decide whether it can be studied, handled, collected or reused.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.MAT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q213096/",
        "tier": 2,
        "score": 75,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "oyster shell",
                "Magic Conch Shell",
                "Periostracum",
                "bivalve shell",
                "test",
                "dentalium shell",
                "mollusc shell",
                "cowrie shell",
                "abalone shell"
            ],
            "aliasCount": 9,
            "merged": 9,
            "knownIn": 75,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q213096",
                "url": "https://www.wikidata.org/wiki/Q213096",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-09T20:20:27Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 19.5,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a087d3-601e-74b0-961b-965733eccb18\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: seashell\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 695 things:\n# Batch 004: 1001 registe",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 56.1,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a087d3-6010-7583-a233-68656b098ba9\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: seashell\nRegistry id: vr.tr.seashell\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContex"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q213096",
                "registryId": "vr.tr.seashell",
                "name": "seashell",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.MAT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q213096/",
            "model": {
                "registry_id": "vr.tr.seashell",
                "name": "seashell",
                "purpose": "Enable an agent to recognise a seashell, assess its biological identity and physical condition, and decide whether it can be studied, handled, collected or reused.",
                "definition": "A seashell is a hard, mineralized structure secreted by the mantle of a marine mollusc, composed predominantly of calcium carbonate within an organic matrix and typically providing bodily support and protection.",
                "scope_statement": "This model owns the mineralised shell produced by a marine mollusc, including attached shells, empty shells, individual valves and identifiable fragments, while recording occupancy and provenance separately from the shell itself.",
                "in_scope": [
                    "Marine molluscan shell identity and uncertainty in attribution",
                    "Shell architecture, diagnostic features and completeness",
                    "Biogenic material composition and surface alteration",
                    "Living attachment, secondary occupancy and associated organisms",
                    "Collection provenance, condition and suitability for proposed uses"
                ],
                "out_of_scope": [
                    "The complete mollusc and its physiology or population dynamics",
                    "Crustacean exoskeletons, sea urchin tests and other non-molluscan hard parts",
                    "Freshwater and terrestrial mollusc shells",
                    "Bulk shell-derived lime, powders and manufactured composites",
                    "Finished jewellery, ornaments and artificial shell replicas",
                    "Marine habitats and sediment deposits as whole systems"
                ],
                "distinguishing_features": [
                    "Identify molluscan shell architecture, such as a coiled aperture-bearing form, hinged valves or an arrangement of shell plates; shape alone may leave fragments unresolved.",
                    "Distinguish a marine origin from freshwater or terrestrial origin using taxonomic identification and provenance rather than the location where an object was purchased or found.",
                    "Check for biological growth structure and diagnostic morphology when distinguishing a natural shell from a cast or imitation; carbonate content alone is insufficient.",
                    "Separate shell identity from occupancy: an empty shell, a shell attached to its maker and a shell occupied by another animal require different handling decisions.",
                    "Distinguish an individual shell or identifiable fragment from shell-rich sediment or processed shell material by whether its biological structure remains interpretable."
                ],
                "characteristics": [
                    {
                        "name": "Producer identification",
                        "kind": "relation",
                        "unit_or_values": "Attributed mollusc taxon; identification method; confidence; unidentified permitted",
                        "why_it_matters": "Connects shell features to a biological identity without treating a tentative identification as established."
                    },
                    {
                        "name": "Shell architecture",
                        "kind": "category",
                        "unit_or_values": "Coiled single shell, uncoiled single shell, paired valves, multiple plates, other, unresolved",
                        "why_it_matters": "Determines which diagnostic features and measurements apply."
                    },
                    {
                        "name": "Specimen extent",
                        "kind": "state",
                        "unit_or_values": "Complete shell, paired valves, single valve, individual plate, fragment, unresolved",
                        "why_it_matters": "Prevents an isolated component from being assessed as a complete shell."
                    },
                    {
                        "name": "Shell dimensions",
                        "kind": "measurement",
                        "unit_or_values": "Length, height, width and local thickness in mm, with landmarks and measurement method",
                        "why_it_matters": "Supports identification and comparison across specimens with different architectures."
                    },
                    {
                        "name": "Shell mass",
                        "kind": "measurement",
                        "unit_or_values": "g, with wet or dry condition and inclusion of occupants, sediment or encrustation stated",
                        "why_it_matters": "Makes mass interpretable for comparison and proposed material uses."
                    },
                    {
                        "name": "Material characterisation",
                        "kind": "category",
                        "unit_or_values": "Measured mineral phases, organic components and coatings; analytical method; untested permitted",
                        "why_it_matters": "Supports conservation and reuse decisions without assuming every shell has identical composition."
                    },
                    {
                        "name": "Occupancy and attachment",
                        "kind": "state",
                        "unit_or_values": "Attached to living producer, occupied by another animal, apparently empty, uncertain; associated organisms recorded separately",
                        "why_it_matters": "Controls whether movement, cleaning or collection could disturb living organisms."
                    },
                    {
                        "name": "Preservation condition",
                        "kind": "state",
                        "unit_or_values": "Observed fractures, edge loss, abrasion, dissolution, boring, encrustation and surface treatment",
                        "why_it_matters": "Separates diagnostic structure from damage and identifies handling vulnerabilities."
                    },
                    {
                        "name": "Origin and collection history",
                        "kind": "relation",
                        "unit_or_values": "Find locality, habitat, date, collector, acquisition chain and supporting records; unknown permitted",
                        "why_it_matters": "Supports marine attribution, scientific value and assessment of collection or transfer constraints."
                    }
                ],
                "affordances": [
                    "Compare shell architecture and diagnostic features with identification references and record confidence.",
                    "Measure and photograph architecture-specific landmarks while preserving fragile edges and surfaces.",
                    "Inspect apertures, valve interiors and attached growth for occupants before handling or collection.",
                    "Assess whether cleaning, repair or sampling would remove diagnostic features or research evidence.",
                    "Evaluate a proposed collection, transfer, display or material use against provenance, occupancy and condition."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "molluscan-identity",
                        "name": "Molluscan identity",
                        "description": "Establishes what produced the shell and whether the specimen belongs within the marine shell concept.",
                        "rationale": "A beach find is not automatically a seashell, and shell appearance may support only a partial identification.",
                        "layers": [
                            {
                                "id": "producer-attribution",
                                "name": "Producer attribution",
                                "description": "Connects observable shell characters to a supported molluscan identification.",
                                "findings": [
                                    {
                                        "id": "diagnostic-shell-characters",
                                        "name": "Diagnostic shell characters",
                                        "description": "Record the features supporting identification and those obscured by wear or breakage.",
                                        "questions": [
                                            {
                                                "text": "Which aperture, hinge, sculpture, coiling or plate features support the proposed molluscan identification?",
                                                "kind": "definition",
                                                "id": "diagnostic-shell-characters-q01"
                                            },
                                            {
                                                "text": "Which reference or expert assessment supports the attribution, and at what taxonomic level is it reliable?",
                                                "kind": "provenance",
                                                "id": "diagnostic-shell-characters-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "marine-origin-and-boundaries",
                                "name": "Marine origin and boundaries",
                                "description": "Tests marine attribution and separates natural shells from neighbouring objects.",
                                "findings": [
                                    {
                                        "id": "seashell-membership",
                                        "name": "Seashell membership",
                                        "description": "Record evidence for marine biological origin independently of present location or commercial labelling.",
                                        "questions": [
                                            {
                                                "text": "What taxonomic or collection evidence supports marine rather than freshwater or terrestrial origin?",
                                                "kind": "provenance",
                                                "id": "seashell-membership-q01"
                                            },
                                            {
                                                "text": "Is this a natural molluscan shell, a non-molluscan hard part, a replica or an unresolved object?",
                                                "kind": "boundary",
                                                "id": "seashell-membership-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "shell-architecture",
                        "name": "Shell architecture",
                        "description": "Describes the shell's biological construction and the extent of the surviving specimen.",
                        "rationale": "Coiled shells, valves and plates require different landmarks, completeness judgments and comparisons.",
                        "layers": [
                            {
                                "id": "form-and-components",
                                "name": "Form and components",
                                "description": "Identifies architecture and determines which shell components are represented.",
                                "findings": [
                                    {
                                        "id": "specimen-completeness",
                                        "name": "Specimen completeness",
                                        "description": "Distinguish a whole shell from a valve, plate or fragment and document evidence that components belong together.",
                                        "questions": [
                                            {
                                                "text": "Does the specimen represent a complete shell, one valve, one plate or a fragment?",
                                                "kind": "boundary",
                                                "id": "specimen-completeness-q01"
                                            },
                                            {
                                                "text": "If several components are present, what evidence shows that they came from the same individual?",
                                                "kind": "provenance",
                                                "id": "specimen-completeness-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "landmarks-and-growth",
                                "name": "Landmarks and growth",
                                "description": "Records repeatable dimensions and interpretable growth-related features.",
                                "findings": [
                                    {
                                        "id": "architecture-specific-measurements",
                                        "name": "Architecture-specific measurements",
                                        "description": "Use explicit landmarks and preserve the distinction between visible growth marks and validated age estimates.",
                                        "questions": [
                                            {
                                                "text": "Which landmarks define length, height, width and thickness for this shell architecture, and what are the measured values?",
                                                "kind": "measurement",
                                                "id": "architecture-specific-measurements-q01"
                                            },
                                            {
                                                "text": "Which growth marks are visible, and is there a validated method for interpreting them beyond relative growth history?",
                                                "kind": "measurement",
                                                "id": "architecture-specific-measurements-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "shell-material-and-preservation",
                        "name": "Shell material and preservation",
                        "description": "Characterises the shell material and separates original structure from subsequent alteration.",
                        "rationale": "Material differences, surface layers and post-formation damage affect identification, preservation and sampling.",
                        "layers": [
                            {
                                "id": "mineral-and-organic-structure",
                                "name": "Mineral and organic structure",
                                "description": "Records evidence about composition, shell layers and applied treatments.",
                                "findings": [
                                    {
                                        "id": "composition-evidence",
                                        "name": "Composition evidence",
                                        "description": "Distinguish directly characterised material from composition inferred through producer identification.",
                                        "questions": [
                                            {
                                                "text": "Which mineral phases and organic shell layers have been identified, by what method and at which sampled location?",
                                                "kind": "measurement",
                                                "id": "composition-evidence-q01"
                                            },
                                            {
                                                "text": "Are colour and lustre attributable to preserved shell surfaces, attached deposits or an applied dye, polish or coating?",
                                                "kind": "boundary",
                                                "id": "composition-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "damage-and-alteration",
                                "name": "Damage and alteration",
                                "description": "Assesses changes affecting structural integrity and retained evidence.",
                                "findings": [
                                    {
                                        "id": "preservation-map",
                                        "name": "Preservation map",
                                        "description": "Locate fractures, abrasion, dissolution, borings and encrustation without assigning unsupported causes.",
                                        "questions": [
                                            {
                                                "text": "Where are cracks, missing edges, worn sculpture, surface loss, holes and attached deposits, and how extensive are they?",
                                                "kind": "measurement",
                                                "id": "preservation-map-q01"
                                            },
                                            {
                                                "text": "Which handling, cleaning or sampling steps could worsen existing damage or erase useful shell evidence?",
                                                "kind": "action",
                                                "id": "preservation-map-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "occupancy-provenance-and-use",
                        "name": "Occupancy, provenance and use",
                        "description": "Connects the shell's living associations and collection history to proposed actions.",
                        "rationale": "A shell can remain part of a living animal or serve another organism, while its origin affects scientific value and permissible use.",
                        "layers": [
                            {
                                "id": "living-associations",
                                "name": "Living associations",
                                "description": "Determines whether the shell supports living occupants or attached organisms.",
                                "findings": [
                                    {
                                        "id": "occupancy-assessment",
                                        "name": "Occupancy assessment",
                                        "description": "Record inspection evidence and uncertainty before treating a shell as empty.",
                                        "questions": [
                                            {
                                                "text": "Is the producer alive, is another animal occupying the shell, or are living organisms attached to its surfaces?",
                                                "kind": "measurement",
                                                "id": "occupancy-assessment-q01"
                                            },
                                            {
                                                "text": "What observation is sufficient to assess occupancy without injuring or forcibly removing an animal?",
                                                "kind": "action",
                                                "id": "occupancy-assessment-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "collection-and-use-decisions",
                                "name": "Collection and use decisions",
                                "description": "Preserves collection context and evaluates a specific proposed intervention or transfer.",
                                "findings": [
                                    {
                                        "id": "provenance-dependent-actions",
                                        "name": "Provenance-dependent actions",
                                        "description": "Tie decisions to documented origin, identification, condition and the evidence needed for the intended use.",
                                        "questions": [
                                            {
                                                "text": "Where, when and under what circumstances was the shell collected or acquired, and which records support that history?",
                                                "kind": "provenance",
                                                "id": "provenance-dependent-actions-q01"
                                            },
                                            {
                                                "text": "For the proposed collection, transfer, cleaning, display or processing, what permissions and suitability checks apply to this identified shell and its origin?",
                                                "kind": "action",
                                                "id": "provenance-dependent-actions-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "The intended sense is inferred to be a marine molluscan shell; everyday usage sometimes includes other hard marine animal remains.",
                                            "Mineral phases, organic content and mechanical properties vary by species and shell layer; seashell is not a substance with one chemical identifier or universal material specification.",
                                            "Species-specific hazards, collection rules and suitability for reuse require checking; this description is recall-based and contains no researched citations."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of seashell this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Gastropod shells",
                                            "Bivalve shells",
                                            "Tusk shells of scaphopods",
                                            "Articulated shell plates of chitons",
                                            "Chambered external shells of nautiluses"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of seashell this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Identification and study of marine molluscs",
                                            "Jewellery, ornament and decorative inlay",
                                            "Archaeological evidence of food consumption, trade and cultural practices",
                                            "Processed calcium carbonate feedstock for lime, fillers and soil amendments",
                                            "Shell material used as settlement substrate in oyster habitat restoration"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of seashell this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "quantity": "Shell length, height and thickness",
                                                "typical_range": "Species-dependent; measurement axes must be defined",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "Dry shell mass",
                                                "typical_range": "Species-, size- and preparation-dependent",
                                                "unit": "g"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of seashell this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Brittle fracture and chipping can produce sharp edges.",
                                            "Acidic conditions can dissolve calcium carbonate and weaken the shell.",
                                            "Abrasion and biological boring can erode shell material.",
                                            "Uncleaned shells can retain decomposing tissue and biological contamination.",
                                            "Cutting or grinding produces dust requiring exposure control."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of seashell this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Species composition and shell forms vary among marine habitats and biogeographic regions.",
                                            "Collection, trade and movement restrictions depend on species, jurisdiction and protected-area status."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of seashell this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "Mollusc",
                                                "difference": "The mollusc is the organism; its shell is a structure it secretes and may leave behind after death."
                                            },
                                            {
                                                "name": "Freshwater or terrestrial mollusc shell",
                                                "difference": "The producing animal inhabits freshwater or land rather than a marine environment."
                                            },
                                            {
                                                "name": "Crustacean exoskeleton",
                                                "difference": "A crustacean exoskeleton is a cuticle shed during moulting; a molluscan shell is mantle-secreted and normally retained as it grows."
                                            },
                                            {
                                                "name": "Calcium carbonate",
                                                "difference": "Calcium carbonate is a chemical compound; a seashell is a structured biological composite containing mineral and organic components."
                                            },
                                            {
                                                "name": "Nacre",
                                                "difference": "Nacre is a particular shell microstructure present in some molluscs, not a synonym for the whole shell."
                                            },
                                            {
                                                "name": "Seashell fossil",
                                                "difference": "A fossil is a geologically preserved shell or its trace, potentially altered or replaced during fossilization."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of seashell this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the registry intend seashell to include internal or reduced marine molluscan shells and detached accessory structures such as opercula?",
                "Should fossilised or mineral-replaced seashells remain within this model or be linked to a separate fossil model?",
                "How should shells from brackish habitats be classified when their producer spans marine and freshwater environments?",
                "Which identification references and measurement conventions should govern each major shell architecture?",
                "Which evidence and testing thresholds are required for specific proposed uses, especially destructive sampling and processing into other materials?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 15,
                "questions": 23
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "chemical substance or material",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a seashell, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise a seashell, assess its biological identity and physical condition, and decide whether it can be studied, handled, collected or reused.",
            "characteristics": {
                "substance": "material",
                "origin": "natural",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "consumed or used up"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: oyster shell, Magic Conch Shell, Periostracum, bivalve shell, test, dentalium shell, mollusc shell, cowrie shell, abalone shell.",
                "9 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 75 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
            ],
            "openQuestionsForResearch": [
                "Which of the bundles below does a real task actually need, and which are ceremony?",
                "What does this thing have that the facets do not capture at all?",
                "Which neighbouring kind is most often confused with a seashell, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state",
                "use it up, and then need more of it"
            ],
            "howItIsRecognised": [
                "Not recognisable by sight in any reliable way. Appearance varies with grade, form and additives; identification is by label, by documentation, or by assay."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "oyster shell",
                        "Magic Conch Shell",
                        "Periostracum",
                        "bivalve shell",
                        "test",
                        "dentalium shell",
                        "mollusc shell",
                        "cowrie shell",
                        "abalone shell"
                    ]
                }
            ],
            "standing": "Described in 75 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 9 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one seashell from another, and a seashell from things that resemble it.",
                        "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.",
                        "layers": [
                            {
                                "id": "naming-and-identifiers",
                                "name": "Names and identifiers",
                                "description": "The names this thing goes by and the identifiers that survive translation and time.",
                                "findings": [
                                    {
                                        "id": "preferred-name-and-aliases",
                                        "name": "Preferred name, aliases and local names",
                                        "description": "Which name to use, which names mean the same thing, and which merely sound similar.",
                                        "questions": [
                                            {
                                                "id": "preferred-name-and-aliases-q01",
                                                "text": "What identifies and describes the name of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q02",
                                                "text": "Who or what asserted this about the name of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q03",
                                                "text": "What may an agent decide or do once the name of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "stable-identifiers",
                                        "name": "Stable identifiers and external keys",
                                        "description": "Identifiers that keep pointing at this kind of thing across systems and languages.",
                                        "questions": [
                                            {
                                                "id": "stable-identifiers-q01",
                                                "text": "What identifies and describes an identifier for a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q02",
                                                "text": "Who or what asserted this about an identifier for a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q03",
                                                "text": "What may an agent decide or do once an identifier for a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "classification-and-granularity",
                                "name": "Classification and granularity",
                                "description": "Where a seashell sits among kinds, and how finely a task needs to cut it.",
                                "findings": [
                                    {
                                        "id": "kind-and-parents",
                                        "name": "Kind, parents and neighbouring kinds",
                                        "description": "The classes this thing belongs to and the ones it is next to.",
                                        "questions": [
                                            {
                                                "id": "kind-and-parents-q01",
                                                "text": "What identifies and describes the kind of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q02",
                                                "text": "Who or what asserted this about the kind of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q03",
                                                "text": "What may an agent decide or do once the kind of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "distinguishing-features",
                                        "name": "Distinguishing features",
                                        "description": "What separates a seashell from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q02",
                                                "text": "Who or what asserted this about what distinguishes a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q03",
                                                "text": "What may an agent decide or do once what distinguishes a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "form-and-composition",
                        "name": "Form, composition and condition",
                        "description": "What a seashell is made of, what shape and size it takes, and what state it is in.",
                        "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.",
                        "layers": [
                            {
                                "id": "form-and-dimensions",
                                "name": "Form and dimensions",
                                "description": "Shape, size, mass and the ranges these take across examples.",
                                "findings": [
                                    {
                                        "id": "measurable-dimensions",
                                        "name": "Measurable dimensions and their units",
                                        "description": "The quantities worth recording and the units they are recorded in.",
                                        "questions": [
                                            {
                                                "id": "measurable-dimensions-q01",
                                                "text": "What identifies and describes the dimensions of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q02",
                                                "text": "Who or what asserted this about the dimensions of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q03",
                                                "text": "What may an agent decide or do once the dimensions of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-composition",
                                "name": "Material and composition",
                                "description": "Materials, parts and how they are put together.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and materials",
                                        "description": "What a seashell is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q02",
                                                "text": "Who or what asserted this about the composition of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q03",
                                                "text": "What may an agent decide or do once the composition of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-integrity",
                                "name": "Condition and integrity",
                                "description": "Wear, damage, health and the difference between working and broken.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition, damage and health",
                                        "description": "How the condition of a seashell is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "Who or what asserted this about the condition of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q03",
                                                "text": "What may an agent decide or do once the condition of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "place-and-movement",
                        "name": "Place and movement",
                        "description": "Where a seashell is, how it got there and where it may go (varies).",
                        "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.",
                        "layers": [
                            {
                                "id": "location-and-placement",
                                "name": "Location and placement",
                                "description": "Position, containment and the reference frame the position is given in.",
                                "findings": [
                                    {
                                        "id": "position-and-frame",
                                        "name": "Position, container and reference frame",
                                        "description": "Where a seashell is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q02",
                                                "text": "Who or what asserted this about the location of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q03",
                                                "text": "What may an agent decide or do once the location of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-and-transfer",
                                "name": "Movement and transfer",
                                "description": "How a seashell is carried, installed or relocated.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q02",
                                                "text": "Who or what asserted this about the movement of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q03",
                                                "text": "What may an agent decide or do once the movement of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "state-and-lifecycle",
                        "name": "State and lifecycle",
                        "description": "The states a seashell passes through and the events that move it between them.",
                        "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.",
                        "layers": [
                            {
                                "id": "lifecycle-stages",
                                "name": "Lifecycle stages",
                                "description": "From coming into existence to ceasing to be one of these.",
                                "findings": [
                                    {
                                        "id": "stages-and-transitions",
                                        "name": "Stages and transitions",
                                        "description": "The stages worth naming and what moves a seashell between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q02",
                                                "text": "Who or what asserted this about the lifecycle of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q03",
                                                "text": "What may an agent decide or do once the lifecycle of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-status",
                                "name": "Observations and current status",
                                "description": "What is observed about a seashell, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a seashell is recorded so that it can be superseded rather than overwritten.",
                                        "questions": [
                                            {
                                                "id": "observation-record-q01",
                                                "text": "What identifies and describes an observation of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q02",
                                                "text": "Who or what asserted this about an observation of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q03",
                                                "text": "What may an agent decide or do once an observation of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "use-and-operation",
                        "name": "Use and operation",
                        "description": "What can be done with a seashell and what it takes to do it.",
                        "rationale": "An agent that can recognise a thing but not act on it has only half a model.",
                        "layers": [
                            {
                                "id": "intended-use",
                                "name": "Intended use and function",
                                "description": "What a seashell is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a seashell performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q02",
                                                "text": "Who or what asserted this about the use of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q03",
                                                "text": "What may an agent decide or do once the use of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-procedure",
                                "name": "Handling and procedure",
                                "description": "The steps, skills and tools involved in using a seashell.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a seashell at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q02",
                                                "text": "Who or what asserted this about handling a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q03",
                                                "text": "What may an agent decide or do once handling a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "supply-and-consumption",
                                "name": "Supply and consumption",
                                "description": "Quantities, rates and what running out means.",
                                "findings": [
                                    {
                                        "id": "consumption-and-stock",
                                        "name": "Consumption, stock and replenishment",
                                        "description": "How much of a seashell there is and how fast it goes.",
                                        "questions": [
                                            {
                                                "id": "consumption-and-stock-q01",
                                                "text": "What identifies and describes the supply of a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q02",
                                                "text": "Who or what asserted this about the supply of a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q03",
                                                "text": "What may an agent decide or do once the supply of a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "composition-and-identity",
                        "name": "Composition, grade and chemical identity",
                        "description": "What seashell is made of and how pure the thing in hand is.",
                        "rationale": "Grade decides what a substance may be used for, so a model that records only the name cannot support any decision about use.",
                        "layers": [
                            {
                                "id": "chemical-identity",
                                "name": "Chemical identity",
                                "description": "Formula, structure and the registry numbers that name it unambiguously.",
                                "findings": [
                                    {
                                        "id": "identity-record",
                                        "name": "Identity and registry numbers",
                                        "description": "What identifies this substance across suppliers and regulators.",
                                        "questions": [
                                            {
                                                "id": "identity-record-q01",
                                                "text": "What formula, structure and registry identifiers name seashell unambiguously?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "identity-record-q02",
                                                "text": "Which related substances share a name in common use but not an identifier?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "grade-and-impurities",
                                "name": "Grade, purity and impurities",
                                "description": "The specification a batch meets and what else is in it.",
                                "findings": [
                                    {
                                        "id": "specification",
                                        "name": "Specification and assay",
                                        "description": "How purity is stated and measured, and which impurities matter.",
                                        "questions": [
                                            {
                                                "id": "specification-q01",
                                                "text": "What grades of seashell exist, how is purity assayed, and which impurities are limited?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "specification-q02",
                                                "text": "Which use requires which grade, and what happens when a lower grade is substituted?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "properties-and-behaviour",
                        "name": "Properties and behaviour",
                        "description": "How seashell behaves under conditions an agent can measure or change.",
                        "rationale": "Physical constants are the part of a substance model that transfers between contexts, and each needs its unit and its conditions.",
                        "layers": [
                            {
                                "id": "physical-constants",
                                "name": "Physical constants",
                                "description": "Values that hold for the pure substance, with their conditions.",
                                "findings": [
                                    {
                                        "id": "constants-record",
                                        "name": "Constants and conditions",
                                        "description": "The quantities worth recording and the state they apply in.",
                                        "questions": [
                                            {
                                                "id": "constants-record-q01",
                                                "text": "What are the defining physical constants of seashell, in what units and under what conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "constants-record-q02",
                                                "text": "Which of these values change with grade or form rather than being fixed?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "stability-and-reactivity",
                                "name": "Stability and reactivity",
                                "description": "What it reacts with, degrades into, and how it is stored.",
                                "findings": [
                                    {
                                        "id": "incompatibilities",
                                        "name": "Incompatibilities and degradation",
                                        "description": "What must not meet it, and what it becomes over time.",
                                        "questions": [
                                            {
                                                "id": "incompatibilities-q01",
                                                "text": "What is seashell incompatible with, and what does it degrade into under storage?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "incompatibilities-q02",
                                                "text": "What storage and handling does that require, and who is competent to do it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazard-and-regulation",
                        "name": "Hazard classification and regulation",
                        "description": "How seashell can harm, and what the law says about holding and moving it.",
                        "rationale": "A substance model without its hazard class and its regulatory identity is unusable in exactly the situations that matter.",
                        "layers": [
                            {
                                "id": "hazard-class",
                                "name": "Hazard classification",
                                "description": "Classified hazards, exposure limits and protective measures.",
                                "findings": [
                                    {
                                        "id": "classified-hazards",
                                        "name": "Classified hazards and limits",
                                        "description": "The classification, the scheme it belongs to, and the limits set.",
                                        "questions": [
                                            {
                                                "id": "classified-hazards-q01",
                                                "text": "How is seashell classified for hazard, under which scheme, and what exposure limits apply?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "classified-hazards-q02",
                                                "text": "What protection does handling require, and what must an agent refuse to do without it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "regulatory-identity",
                                "name": "Regulatory identity and control",
                                "description": "Registration, restriction and transport rules by jurisdiction.",
                                "findings": [
                                    {
                                        "id": "controls",
                                        "name": "Controls and jurisdiction",
                                        "description": "Where it is restricted and what the restriction attaches to.",
                                        "questions": [
                                            {
                                                "id": "controls-q01",
                                                "text": "Which registrations, restrictions or transport rules cover seashell, and where?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "controls-q02",
                                                "text": "Does the control attach to the substance, its concentration, or its intended use?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a seashell came from and when it held.",
                        "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.",
                        "layers": [
                            {
                                "id": "source-and-authority",
                                "name": "Source and authority",
                                "description": "Who said it, on what evidence, and how strongly.",
                                "findings": [
                                    {
                                        "id": "claim-provenance",
                                        "name": "Claim provenance and confidence",
                                        "description": "The authority behind each claim about a seashell and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q02",
                                                "text": "Who or what asserted this about a claim about a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q03",
                                                "text": "What may an agent decide or do once a claim about a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "time-and-versions",
                                "name": "Time, versions and supersession",
                                "description": "When a claim was true, when it was learnt, and what replaced it.",
                                "findings": [
                                    {
                                        "id": "validity-and-supersession",
                                        "name": "Validity period and supersession",
                                        "description": "How an old claim about a seashell is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a seashell, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q02",
                                                "text": "Who or what asserted this about the validity of a claim about a seashell, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q03",
                                                "text": "What may an agent decide or do once the validity of a claim about a seashell is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 9,
                "layers": 20,
                "findings": 22,
                "questions": 60
            }
        }
    }
}