{ "model": { "rank": 8471, "code": "thing-q325358", "model_id": "vr.tr.railway-platform", "name": "railway platform", "purpose": "Let an agent handle railway platforms by station, number, height, facilities, safety and accessibility.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.BLT", "industry": "", "version": "", "url": "/models/thing/q325358/", "tier": 2, "score": 51, "payload": { "layer": "wikidata", "aliases": [ "postal platform", "platform 1", "platform 2", "platform 3", "platform 4", "platform 5", "platform 6", "platform 7", "platform 8", "platform 9", "platform 10", "platform 11", "platform 12", "platform 13", "platform 15", "platform 17", "platform 20", "platform 21", "platform 22", "platform 23", "platform 24", "platform 28", "platform 29", "platform 30", "platform 31", "platform 32", "platform 33", "platform 34", "platform 101", "platform 102", "platform 103", "platform 301", "platform 302", "platform 303", "platform 304", "platform 14", "platform 16", "platform 18", "platform 19", "platform 25" ], "aliasCount": 60, "merged": 60, "knownIn": 51, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q325358", "url": "https://www.wikidata.org/wiki/Q325358", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T09:19:58Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 1, "engine": "claude" }, "metaModel": { "id": "THING-Q325358", "registryId": "vr.tr.railway-platform", "name": "railway platform", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.BLT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q325358/", "model": { "registry_id": "vr.tr.railway-platform", "name": "railway platform", "purpose": "Let an agent handle railway platforms by station, number, height, facilities, safety and accessibility.", "definition": "A raised or level area alongside railway tracks where passengers board and leave trains or goods are loaded, identified by platform numbers, with edges, shelters, signage and accessibility features.", "what_it_is_for": "Safe boarding and alighting at stations.", "affordances": [ "find the right platform", "check step-free access and platform height", "follow platform safety rules", "book boarding assistance" ], "distinguishing_features": [ "Boarding area at stations", "Numbered", "Height and gap matter for access", "Edge safety critical" ], "appearance": "Long paved strips beside tracks with edges, tactile paving, canopies and signs.", "visual_identification": [ "Platform numbers", "Yellow lines and tactile edge paving", "Postal and goods platforms are specialised" ], "physical_properties": [ { "quantity": "platform height", "typical_range": "about 550-1100", "unit": "mm", "note": "varies by country and train type" } ], "families_and_kinds": [ "side platforms", "island platforms", "bay platforms", "goods and postal platforms" ], "related_models": [ { "relation": "is part of", "target": "railway station", "why": "station" }, { "relation": "is a kind of", "target": "rail infrastructure", "why": "category" }, { "relation": "serves", "target": "train", "why": "vehicles" }, { "relation": "is regulated by", "target": "TSI PRM accessibility rules", "why": "standards" } ], "identifiers": [], "standards_and_regulation": [ "EU TSI for persons with reduced mobility", "National railway safety rules" ], "failure_modes_and_hazards": [ "Falls between platform and train", "Crowding near edges", "Inaccessible stepping distances" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "identity", "name": "Identity", "description": "Which platform.", "rationale": "Numbers guide travellers.", "layers": [ { "id": "number", "name": "Number", "description": "Platform number.", "findings": [ { "id": "number-finding", "name": "Number", "description": "Platform number.", "questions": [ { "text": "Which platform does this train use?", "kind": "provenance" }, { "text": "Could it change at short notice?", "kind": "boundary" } ] } ] }, { "id": "type", "name": "Type", "description": "Side or island.", "findings": [ { "id": "type-finding", "name": "Type", "description": "Platform type.", "questions": [ { "text": "Is it a side, island or bay platform?", "kind": "definition" }, { "text": "Which lines does it serve?", "kind": "provenance" } ] } ] } ] }, { "id": "access", "name": "Access", "description": "Step-free.", "rationale": "Access matters.", "layers": [ { "id": "step-free", "name": "Step-free", "description": "Lifts and ramps.", "findings": [ { "id": "step-free-finding", "name": "Step-free", "description": "Step-free access.", "questions": [ { "text": "Is there step-free access to this platform?", "kind": "provenance" }, { "text": "How can boarding assistance be booked?", "kind": "action" } ] } ] }, { "id": "gap", "name": "Gap", "description": "Height and gap.", "findings": [ { "id": "gap-finding", "name": "Gap", "description": "Stepping distance.", "questions": [ { "text": "What is the step and gap between platform and train?", "kind": "measurement" }, { "text": "Is a ramp provided?", "kind": "definition" } ] } ] } ] }, { "id": "safety", "name": "Safety", "description": "Edges.", "rationale": "Platform edges are dangerous.", "layers": [ { "id": "edge", "name": "Edge", "description": "Yellow line.", "findings": [ { "id": "edge-finding", "name": "Edge", "description": "Edge safety.", "questions": [ { "text": "Where should passengers stand to stay safe?", "kind": "action" }, { "text": "Are there platform screen doors?", "kind": "definition" } ] } ] }, { "id": "emergency", "name": "Emergency", "description": "Help points.", "findings": [ { "id": "emergency-finding", "name": "Emergency", "description": "Emergency help.", "questions": [ { "text": "What should someone do if an item or person falls onto the track?", "kind": "action" }, { "text": "Where are help points?", "kind": "provenance" } ] } ] } ] }, { "id": "facilities", "name": "Facilities", "description": "Waiting.", "rationale": "Facilities help passengers.", "layers": [ { "id": "shelter", "name": "Shelter", "description": "Seating and information.", "findings": [ { "id": "shelter-finding", "name": "Shelter", "description": "Facilities.", "questions": [ { "text": "Is there seating, shelter and live information?", "kind": "definition" }, { "text": "Are announcements accessible?", "kind": "boundary" } ] } ] }, { "id": "crowding", "name": "Crowding", "description": "Management.", "findings": [ { "id": "crowding-finding", "name": "Crowding", "description": "Crowd management.", "questions": [ { "text": "How is crowding managed at busy times?", "kind": "definition" }, { "text": "Who controls access?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should platform types be separate entries?", "How should platform data be linked?", "How should accessibility gaps be recorded?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "building, structure or infrastructure", "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 railway platform, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent handle railway platforms by station, number, height, facilities, safety and accessibility.", "characteristics": { "substance": "material", "origin": "manufactured", "agency": "inert", "mobility": "fixed", "scale": "built" }, "whatYouCanDoWithIt": [ "observed and measured", "entered, crossed or travelled along" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: postal platform, platform 1, platform 2, platform 3, platform 4, platform 5, platform 6, platform 7, platform 8, platform 9, platform 10, platform 11.", "60 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 51 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 railway platform, and on what evidence are they told apart?" ], "whatItIsMadeOf": "matter you can touch", "physicalCharacter": [ "On the scale of a building: sited rather than moved.", "Stays where it was put; moving it is a project.", "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", "enter it, cross it, travel along it" ], "howItIsRecognised": [ "Recognised by form, materials and siting, and confirmed by address or by a register entry rather than by looking." ], "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": [ "postal platform", "platform 1", "platform 2", "platform 3", "platform 4", "platform 5", "platform 6", "platform 7", "platform 8", "platform 9", "platform 10", "platform 11" ] } ], "standing": "Described in 51 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 60 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 railway platform from another, and a railway platform 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 railway platform, 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 railway platform, 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 railway platform 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 railway platform, 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 railway platform, 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 railway platform 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 railway platform 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 railway platform, 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 railway platform, 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 railway platform 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 railway platform from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a railway platform, 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 railway platform, 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 railway platform 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 railway platform 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 at built scale.", "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 railway platform, 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 railway platform, 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 railway platform 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 railway platform is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a railway platform, 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 railway platform, 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 railway platform 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 railway platform is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a railway platform, 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 railway platform, 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 railway platform 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 railway platform is, how it got there and where it may go (fixed).", "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 railway platform is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a railway platform, 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 railway platform, 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 railway platform 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 railway platform 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 railway platform, 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 railway platform, 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 railway platform 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 railway platform 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 railway platform between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a railway platform, 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 railway platform, 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 railway platform 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 railway platform, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a railway platform 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 railway platform, 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 railway platform, 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 railway platform 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 railway platform 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 railway platform is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a railway platform performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a railway platform, 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 railway platform, 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 railway platform 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 railway platform.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a railway platform at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a railway platform, 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 railway platform, 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 railway platform is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "structure-and-capacity", "name": "Structure, materials and capacity", "description": "How railway platform is built and how much it can take.", "rationale": "Capacity and structural type govern what may lawfully happen inside or on it, and both are attested rather than obvious.", "layers": [ { "id": "construction", "name": "Construction and materials", "description": "Structural type, materials and principal dimensions.", "findings": [ { "id": "construction-record", "name": "Structural type and dimensions", "description": "What it is made of and how big it is.", "questions": [ { "id": "construction-record-q01", "text": "What structural type and materials characterise railway platform, and what are its principal dimensions?", "kind": "measurement" }, { "id": "construction-record-q02", "text": "What in that construction limits how it may be altered?", "kind": "boundary" } ] } ] }, { "id": "capacity-and-load", "name": "Capacity and load", "description": "Occupancy, load ratings and their basis.", "findings": [ { "id": "capacity-record", "name": "Rated capacity and who set it", "description": "The limits and the authority that certified them.", "questions": [ { "id": "capacity-record-q01", "text": "What capacity or load is railway platform rated for, under which code, certified by whom?", "kind": "provenance" }, { "id": "capacity-record-q02", "text": "What must an agent refuse to permit beyond that rating?", "kind": "action" } ] } ] } ] }, { "id": "tenure-and-condition", "name": "Ownership, permitting and condition", "description": "Who holds railway platform, what it is permitted for, and what state it is in.", "rationale": "A structure is not the organisation that uses it, and its permission to exist is separate from its condition.", "layers": [ { "id": "tenure", "name": "Ownership and permission", "description": "Title, occupancy and the permits in force.", "findings": [ { "id": "tenure-record", "name": "Title, occupier and permits", "description": "Who owns, who occupies, and what is permitted.", "questions": [ { "id": "tenure-record-q01", "text": "Who owns and who occupies railway platform, and which permits or consents are in force?", "kind": "definition" }, { "id": "tenure-record-q02", "text": "What distinguishes the structure from the organisation that operates in it?", "kind": "boundary" } ] } ] }, { "id": "inspection", "name": "Condition and inspection", "description": "Inspection regime, defects and remaining service life.", "findings": [ { "id": "inspection-record", "name": "Inspections and defects", "description": "What is inspected, how often, and what was found.", "questions": [ { "id": "inspection-record-q01", "text": "What inspection regime applies to railway platform, at what interval, and by whom?", "kind": "provenance" }, { "id": "inspection-record-q02", "text": "What finding takes it out of service, and who may authorise its return?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a railway platform 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 railway platform and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a railway platform, 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 railway platform, 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 railway platform 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 railway platform is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a railway platform, 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 railway platform, 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 railway platform is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 8, "layers": 17, "findings": 19, "questions": 53 } } } }