{ "model": { "rank": 3844, "code": "thing-q133833", "model_id": "vr.tr.gravel", "name": "gravel", "purpose": "Enable an AI agent to recognise gravel, describe its grain population and condition, and assess whether a particular deposit or lot is suitable for an intended use.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.OBJ", "industry": "", "version": "", "url": "/models/thing/q133833/", "tier": 2, "score": 81, "payload": { "layer": "wikidata", "aliases": [ "Meuse gravel", "natural gravel", "tengu tsubute", "natural sandy gravel", "crushed stone", "river gravel", "Burgau", "basalt aggregate", "geofact" ], "aliasCount": 9, "merged": 9, "knownIn": 81, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q133833", "url": "https://www.wikidata.org/wiki/Q133833", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-09T18:53:53Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 26.8, "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: 01a08784-07c1-78c2-a087-ceb787d26ed4\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: gravel\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 695 things:\n# Batch 004: 1001 registere", "usd": 0, "recall": true }, "codex": { "seconds": 61.7, "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: 01a08784-07be-73c0-9ed9-51905e2f6f59\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: gravel\nRegistry id: vr.tr.gravel\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext fo" } } }, "metaModel": { "id": "THING-Q133833", "registryId": "vr.tr.gravel", "name": "gravel", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q133833/", "model": { "registry_id": "vr.tr.gravel", "name": "gravel", "purpose": "Enable an AI agent to recognise gravel, describe its grain population and condition, and assess whether a particular deposit or lot is suitable for an intended use.", "definition": "Gravel is an unconsolidated granular material composed predominantly of rock fragments in a particle-size class coarser than sand, with the class boundaries depending on the geological or engineering classification used.", "scope_statement": "This model owns gravel as a particulate earth material, including natural occurrences and handled lots; it records the classification convention used and keeps geological identity separate from commercial aggregate labels.", "in_scope": [ "Grain-size distribution and the convention used to classify gravel", "Particle shape, rock composition, weathering and unwanted constituents", "Natural deposits, extracted lots and processed gravel with traceable origins", "Moisture, fines, packing and segregation within a described quantity", "Evidence of suitability for a stated application and permitted processing" ], "out_of_scope": [ "Individual rock specimens and their full geological classification", "Sand, silt and clay as independently modelled materials", "Cemented conglomerate and other coherent rock masses", "Quarries, river systems and landforms containing gravel", "Concrete, asphalt, roads and drainage systems incorporating gravel", "Extraction equipment, transport vehicles and operating organisations" ], "distinguishing_features": [ "An examined sample consists of discrete grains rather than a coherent rock mass; cemented material requires a boundary decision.", "Measured grain sizes support a gravel designation under an explicitly named classification convention; appearance alone is insufficient.", "The gravel-sized fraction and the classification of the whole mixture are recorded separately, preventing a sand-rich mixture from being described solely by its largest grains.", "Particle shape and processing history distinguish rounded or naturally fragmented gravel from crushed aggregate where the selected terminology makes that distinction.", "A material lot is distinguished from a gravel bed or commercial product name by an explicit sampling and quantity boundary." ], "characteristics": [ { "name": "Classification convention", "kind": "relation", "unit_or_values": "Named classification system, version and applicable context", "why_it_matters": "Controls grain-size boundaries and the meaning of the gravel designation." }, { "name": "Particle-size distribution", "kind": "measurement", "unit_or_values": "Percentage by dry mass passing or retained at stated sieve apertures in mm", "why_it_matters": "Establishes size composition and supports application-specific grading checks." }, { "name": "Fine-material content", "kind": "measurement", "unit_or_values": "Percentage by dry mass below an explicitly stated size threshold and test method", "why_it_matters": "Helps assess drainage, handling and sensitivity to water without assuming all fines behave alike." }, { "name": "Particle shape and surface texture", "kind": "category", "unit_or_values": "Roundness, angularity, flatness, elongation and texture using a stated assessment method", "why_it_matters": "Supports distinction between material types and assessment of packing and mechanical behaviour." }, { "name": "Rock composition", "kind": "measurement", "unit_or_values": "Constituent rock types and estimated proportions with mass, volume or particle-count basis", "why_it_matters": "A gravel lot can contain multiple rock types with different durability and application constraints." }, { "name": "Origin and processing history", "kind": "relation", "unit_or_values": "Source deposit or supplier lot linked to extraction, screening, washing, crushing and blending records", "why_it_matters": "Connects current properties to provenance and identifies changes requiring reassessment." }, { "name": "Water content", "kind": "measurement", "unit_or_values": "Percentage water mass relative to dry material mass, with method and sampling time", "why_it_matters": "Supports dry-mass comparisons and interpretation of handling and condition." }, { "name": "Bulk density", "kind": "measurement", "unit_or_values": "kg/m³ with moisture and loose, settled or compacted condition stated", "why_it_matters": "Allows defensible mass-volume conversion for the measured condition." }, { "name": "Weathering and particle degradation", "kind": "state", "unit_or_values": "Observed weathering, friability and breakage, supported by relevant test results", "why_it_matters": "Identifies material that may change grading or lose performance during handling or service." }, { "name": "Unwanted constituents", "kind": "measurement", "unit_or_values": "Identified constituents with concentration or proportion, method and detection limits where applicable", "why_it_matters": "Supports decisions about acceptance, separation, further testing or restricted use." }, { "name": "Hydraulic conductivity", "kind": "measurement", "unit_or_values": "m/s with grading, packing, saturation and test conditions", "why_it_matters": "Provides evidence for drainage use rather than inferring performance from the gravel label." }, { "name": "Application acceptance", "kind": "state", "unit_or_values": "Unassessed, accepted, conditionally accepted or rejected against named requirements", "why_it_matters": "Prevents suitability for one use from being treated as universal approval." } ], "affordances": [ "Classify a representative sample under a selected gravel classification convention.", "Compare a lot's measured grading and condition with requirements for a stated use.", "Identify whether screening, washing or controlled blending could address a measured mismatch.", "Plan sampling that detects fines migration, segregation and variation across a deposit or stockpile.", "Estimate quantity from measured mass or volume using condition-specific evidence.", "Flag lots requiring further durability, contamination or hydraulic testing before use." ] }, "sources": [], "structure": { "bundles": [ { "id": "grain-identity", "name": "Grain identity", "description": "Establishes what the gravel designation means for the material being assessed.", "rationale": "Gravel identity depends on grain-size conventions and mixture boundaries, not simply on a familiar appearance.", "layers": [ { "id": "size-classification", "name": "Size classification", "description": "Connects measured sizes to an explicit classification system.", "findings": [ { "id": "gravel-size-boundary", "name": "Gravel size boundary", "description": "Record the governing size limits and the evidence supporting the assigned class.", "questions": [ { "text": "Which classification convention and version define gravel for this assessment?", "kind": "definition", "id": "gravel-size-boundary-q01" }, { "text": "What proportion of the sample falls within that convention's gravel-size interval?", "kind": "measurement", "id": "gravel-size-boundary-q02" } ] } ] }, { "id": "material-sense", "name": "Material sense", "description": "Separates grain-size terminology from geological and commercial naming.", "findings": [ { "id": "gravel-and-neighbouring-materials", "name": "Gravel and neighbouring materials", "description": "Resolve whether the designation refers to a size fraction, a whole sediment mixture or a supplied aggregate product.", "questions": [ { "text": "Does gravel name the whole material, its coarse fraction or a commercial product designation?", "kind": "definition", "id": "gravel-and-neighbouring-materials-q01" }, { "text": "How does the selected convention distinguish this material from crushed stone, sandy gravel and cemented conglomerate?", "kind": "boundary", "id": "gravel-and-neighbouring-materials-q02" } ] } ] } ] }, { "id": "particle-makeup", "name": "Particle makeup", "description": "Describes the grains and accompanying constituents that make up the gravel.", "rationale": "Lots with similar grain sizes can differ substantially in composition, shape and particle integrity.", "layers": [ { "id": "rock-and-shape", "name": "Rock and shape", "description": "Characterises constituent rock types and grain geometry.", "findings": [ { "id": "constituent-grain-population", "name": "Constituent grain population", "description": "Record composition and shape distributions rather than assigning one rock type or shape to every grain.", "questions": [ { "text": "Which rock types occur, in what proportions, and on what measurement basis?", "kind": "measurement", "id": "constituent-grain-population-q01" }, { "text": "How are roundness, angularity, flatness, elongation and surface texture distributed across the sampled grains?", "kind": "measurement", "id": "constituent-grain-population-q02" } ] } ] }, { "id": "fines-and-particle-condition", "name": "Fines and particle condition", "description": "Examines accompanying fine material, grain coatings and damaged particles.", "findings": [ { "id": "fines-coatings-and-weathering", "name": "Fines, coatings and weathering", "description": "Distinguish loose fines, adhering coatings and degrading grains because they call for different assessments.", "questions": [ { "text": "How much fine material is present, and is it loose, attached to grains or generated by particle breakdown?", "kind": "measurement", "id": "fines-coatings-and-weathering-q01" }, { "text": "What evidence identifies weathered, friable or otherwise unwanted particles and constituents?", "kind": "measurement", "id": "fines-coatings-and-weathering-q02" } ] } ] } ] }, { "id": "deposit-and-lot-provenance", "name": "Deposit and lot provenance", "description": "Connects a described quantity of gravel to its origin, processing and sampling history.", "rationale": "A sample from one part of a deposit or stockpile cannot automatically represent every quantity sharing its name.", "layers": [ { "id": "origin-and-transformation", "name": "Origin and transformation", "description": "Tracks source material and operations that changed its grain population.", "findings": [ { "id": "source-to-current-material", "name": "Source to current material", "description": "Maintain a traceable account of where the gravel came from and how the assessed lot was produced.", "questions": [ { "text": "Which deposit, extraction area or supplier lot is the documented source?", "kind": "provenance", "id": "source-to-current-material-q01" }, { "text": "Which screening, washing, crushing or blending operations occurred before the current assessment?", "kind": "provenance", "id": "source-to-current-material-q02" } ] } ] }, { "id": "sampling-and-variability", "name": "Sampling and variability", "description": "Defines what each observation represents and where variation remains unresolved.", "findings": [ { "id": "representative-gravel-sample", "name": "Representative gravel sample", "description": "Link sample results to a bounded deposit interval or lot and document potential segregation.", "questions": [ { "text": "What physical extent, quantity and sampling date does this sample represent?", "kind": "boundary", "id": "representative-gravel-sample-q01" }, { "text": "How did sampling account for coarse-particle segregation, fines concentration and spatial variation?", "kind": "provenance", "id": "representative-gravel-sample-q02" } ] } ] } ] }, { "id": "bulk-condition-and-performance", "name": "Bulk condition and performance", "description": "Describes gravel as an assemblage of grains with water and void space.", "rationale": "Drainage, packing and mechanical performance depend on the assembled material's condition as well as its individual particles.", "layers": [ { "id": "packing-and-water", "name": "Packing and water", "description": "Captures the physical state needed to interpret bulk measurements.", "findings": [ { "id": "condition-specific-bulk-properties", "name": "Condition-specific bulk properties", "description": "Attach moisture and packing conditions to density, void-space and flow observations.", "questions": [ { "text": "What are the measured water content and bulk density, and was the gravel loose, settled or compacted?", "kind": "measurement", "id": "condition-specific-bulk-properties-q01" }, { "text": "Under what grading, packing and saturation conditions was hydraulic conductivity measured?", "kind": "measurement", "id": "condition-specific-bulk-properties-q02" } ] } ] }, { "id": "breakdown-and-service-response", "name": "Breakdown and service response", "description": "Examines whether handling or intended service changes the material's useful properties.", "findings": [ { "id": "performance-under-stated-exposure", "name": "Performance under stated exposure", "description": "Record relevant evidence of particle breakdown and durability for the expected loads and exposure.", "questions": [ { "text": "Which tests or observations assess particle breakdown under the intended handling and loading conditions?", "kind": "measurement", "id": "performance-under-stated-exposure-q01" }, { "text": "Which exposure-specific durability questions remain unresolved for the proposed use?", "kind": "boundary", "id": "performance-under-stated-exposure-q02" } ] } ] } ] }, { "id": "use-and-material-adjustment", "name": "Use and material adjustment", "description": "Connects measured gravel properties to application decisions and subsequent processing.", "rationale": "The gravel label alone does not establish suitability, and processing can invalidate earlier measurements.", "layers": [ { "id": "application-fit", "name": "Application fit", "description": "Compares the assessed material with a concrete set of use requirements.", "findings": [ { "id": "evidence-based-acceptance", "name": "Evidence-based acceptance", "description": "Keep acceptance specific to the lot, application, requirements and supporting evidence.", "questions": [ { "text": "Which application and named requirements govern grading, cleanliness, durability and other acceptance properties?", "kind": "action", "id": "evidence-based-acceptance-q01" }, { "text": "Which requirements are supported by current lot-specific measurements, and which remain unverified?", "kind": "measurement", "id": "evidence-based-acceptance-q02" } ] } ] }, { "id": "processing-and-reassessment", "name": "Processing and reassessment", "description": "Determines appropriate material adjustments and the evidence needed afterward.", "findings": [ { "id": "adjust-and-retest-gravel", "name": "Adjust and retest gravel", "description": "Link proposed screening, washing or blending to a measured deficiency and a reassessment plan.", "questions": [ { "text": "Could screening, washing or controlled blending address the identified mismatch, and what evidence supports that choice?", "kind": "action", "id": "adjust-and-retest-gravel-q01" }, { "text": "Which properties must be resampled after processing, transport or storage changes the lot?", "kind": "action", "id": "adjust-and-retest-gravel-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": [ "This entry covers gravel as a granular earth material, not a particular deposit, product grade or individual stone.", "Confirm the intended particle-size classification before assigning numerical boundaries; geological gravel can include cobbles and boulders.", "The standards are recalled without edition verification; product suitability requires checking the applicable edition and testing the actual material." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of gravel 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": [ "River gravel", "Beach gravel", "Glaciofluvial gravel", "Pea gravel", "Crushed gravel", "Washed gravel" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of gravel this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "ASTM International ASTM D2487: engineering classification of soils, including gravel, under the Unified Soil Classification System.", "ASTM International ASTM C33/C33M: requirements for concrete aggregates, including qualifying gravel coarse aggregates.", "European Committee for Standardization EN 12620: aggregates for concrete.", "European Committee for Standardization EN 13242: aggregates for unbound and hydraulically bound materials used in civil engineering work and road construction." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of gravel 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": [ "Coarse aggregate in concrete.", "Road base, subbase and unbound road surfacing.", "Drainage layers and trench backfill.", "Graded filter media.", "Landscaping and pedestrian surfacing." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of gravel 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": "Particle diameter in the Udden-Wentworth sediment classification", "typical_range": "2-256 for granules, pebbles and cobbles; the broader gravel category also includes larger boulders", "unit": "mm" }, { "quantity": "Gravel particle size in the Unified Soil Classification System", "typical_range": "Passing the 75 mm sieve and retained on the 4.75 mm sieve", "unit": "mm" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of gravel 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": [ "Settlement or rutting under load when placement, grading or compaction is inadequate.", "Clogging of drainage voids by migrating fines or accumulated sediment.", "Particle breakdown under abrasion or freeze-thaw exposure where the constituent rock is insufficiently durable.", "Potential alkali-silica reaction when reactive gravel constituents are used in concrete.", "Respirable dust exposure during handling or crushing, including crystalline silica where present." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of gravel 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": [ "Geological and engineering systems use different gravel size boundaries; US engineering classification commonly uses 4.75 mm as the lower boundary, while several other systems use 2 mm.", "Commercial labels such as pea gravel and numbered gravel grades have locally defined size ranges.", "Local geology controls mineral composition, colour, durability and potential concrete reactivity." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of gravel 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": "sand", "difference": "Sand occupies the finer particle-size class immediately below gravel; the separating size depends on the classification system." }, { "name": "crushed stone", "difference": "Crushed stone is produced by mechanically breaking rock; gravel commonly denotes naturally accumulated fragments, although gravel can also be crushed during processing." }, { "name": "aggregate", "difference": "Aggregate is a broader material category that includes gravel, sand, crushed stone and other granular constituents." }, { "name": "conglomerate", "difference": "Conglomerate is a consolidated sedimentary rock containing rounded gravel-size clasts; gravel is unconsolidated." }, { "name": "pebble", "difference": "A pebble is an individual clast in a particular size class; gravel denotes a granular material or a broader sediment-size category." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of gravel this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which geological, geotechnical and aggregate classification conventions should this registry support, and how should their differing gravel boundaries be represented?", "Does this entry include crushed gravel and commercially labelled crushed stone, or should those materials link to a neighbouring aggregate model?", "Which sampling methods adequately represent each supported form: natural deposit, stockpile and delivered lot?", "Which application-specific test methods and acceptance requirements should be linked for drainage, unbound construction and concrete aggregate uses?", "What existing Vercy models cover sediment, rock and aggregate, and which shared concepts should this model reference rather than duplicate?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 18, "questions": 28 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "device, machine or tool", "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 gravel, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to recognise gravel, describe its grain population and condition, and assess whether a particular deposit or lot is suitable for an intended use.", "characteristics": { "substance": "material", "origin": "manufactured", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: Meuse gravel, natural gravel, tengu tsubute, natural sandy gravel, crushed stone, river gravel, Burgau, basalt aggregate, geofact.", "9 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 81 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 gravel, 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" ], "howItIsRecognised": [ "Recognised by form, by the arrangement of its controls, and by markings - a plate, a model number, a certification mark. Form alone rarely separates two models that do very different things." ], "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": [ "Meuse gravel", "natural gravel", "tengu tsubute", "natural sandy gravel", "crushed stone", "river gravel", "Burgau", "basalt aggregate", "geofact" ] } ], "standing": "Described in 81 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 gravel from another, and a gravel 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 gravel, 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 gravel, 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 gravel 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 gravel, 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 gravel, 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 gravel 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 gravel 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 gravel, 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 gravel, 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 gravel 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 gravel from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a gravel, 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 gravel, 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 gravel 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 gravel 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 gravel, 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 gravel, 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 gravel 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 gravel is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a gravel, 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 gravel, 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 gravel 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 gravel is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a gravel, 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 gravel, 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 gravel 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 gravel 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 gravel is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a gravel, 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 gravel, 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 gravel 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 gravel 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 gravel, 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 gravel, 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 gravel 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 gravel 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 gravel between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a gravel, 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 gravel, 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 gravel 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 gravel, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a gravel 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 gravel, 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 gravel, 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 gravel is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "function-and-principle", "name": "Function and operating principle", "description": "What gravel is for and how it achieves it.", "rationale": "Two devices with the same name can work on different principles, and the principle is what predicts failure and constrains use.", "layers": [ { "id": "intended-function", "name": "Intended function", "description": "The job it does, and the jobs it is used for anyway.", "findings": [ { "id": "function-record", "name": "Function, principle and variants", "description": "What it does, how, and which variants do it differently.", "questions": [ { "id": "function-record-q01", "text": "What function does gravel perform, on what operating principle, and which variants differ in that principle?", "kind": "definition" }, { "id": "function-record-q02", "text": "What use falls outside the intended function but happens in practice?", "kind": "boundary" } ] } ] }, { "id": "capacity-and-rating", "name": "Capacity and rating", "description": "The numbers that say what it can do and where it stops.", "findings": [ { "id": "ratings", "name": "Ratings and their conditions", "description": "Rated capacity, power, throughput and the conditions each assumes.", "questions": [ { "id": "ratings-q01", "text": "What ratings characterise gravel, in what units, and under what stated conditions?", "kind": "measurement" }, { "id": "ratings-q02", "text": "What happens beyond the rating - degradation, refusal, damage - and how is that detected?", "kind": "action" } ] } ] } ] }, { "id": "operation-and-state", "name": "Operation, controls and state", "description": "How gravel is operated and what state it is in right now.", "rationale": "An agent acting on a device needs its current state and the controls that change it, not just its specification.", "layers": [ { "id": "controls-and-modes", "name": "Controls and modes", "description": "What can be set, what that changes, and what is interlocked.", "findings": [ { "id": "control-surface", "name": "Control surface and interlocks", "description": "The settings available and the conditions that block them.", "questions": [ { "id": "control-surface-q01", "text": "What controls and modes does gravel have, and what does each change?", "kind": "definition" }, { "id": "control-surface-q02", "text": "Which actions are interlocked or forbidden in which state, and what must be true before acting?", "kind": "action" } ] } ] }, { "id": "condition-and-maintenance", "name": "Condition and maintenance", "description": "Wear, service intervals, consumables and the line between working and broken.", "findings": [ { "id": "service-record", "name": "Condition, service and consumables", "description": "What is consumed, what is serviced, and how condition is judged.", "questions": [ { "id": "service-record-q01", "text": "What consumables and service does gravel need, at what interval, and on whose authority?", "kind": "measurement" }, { "id": "service-record-q02", "text": "What evidence separates a unit that is working from one that is out of service?", "kind": "boundary" } ] } ] } ] }, { "id": "kind-model-unit", "name": "Kind, model and unit", "description": "Whether a claim about gravel is about the kind, a product line, or one physical unit.", "rationale": "This is the boundary most often got wrong for made things, and getting it wrong mixes a catalogue entry with the machine in the yard.", "layers": [ { "id": "level-of-reference", "name": "Level of reference", "description": "The three levels and what belongs at each.", "findings": [ { "id": "level-rules", "name": "What belongs to kind, model and unit", "description": "Which properties are shared by all of them and which are not.", "questions": [ { "id": "level-rules-q01", "text": "Which facts about gravel hold for every one of them, which for a model, and which only for one unit?", "kind": "boundary" }, { "id": "level-rules-q02", "text": "What identifies an individual unit, and what should an agent do when it has only the kind?", "kind": "action" } ] } ] }, { "id": "standards-and-conformity", "name": "Standards and conformity", "description": "The standards a working example must meet and who attests it.", "findings": [ { "id": "conformity", "name": "Standards, marks and attestation", "description": "Which standard applies, who certifies, and what the mark means.", "questions": [ { "id": "conformity-q01", "text": "Which standards govern gravel, issued by whom, and what does conformity actually assert?", "kind": "provenance" }, { "id": "conformity-q02", "text": "What may an agent conclude from a certification mark, and what may it not?", "kind": "boundary" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a gravel 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 gravel and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a gravel, 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 gravel, 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 gravel 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 gravel is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a gravel, 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 gravel, 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 gravel is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 8, "layers": 17, "findings": 19, "questions": 51 } } } }