{
    "model": {
        "rank": 2187,
        "code": "thing-q82650",
        "model_id": "vr.tr.taxi",
        "name": "taxi",
        "purpose": "Enable an AI agent to recognise a taxi, assess its readiness for a proposed passenger trip and determine which service actions are supported by recorded evidence.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q82650/",
        "tier": 2,
        "score": 113,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "autorickshaw",
                "Van taxi",
                "illegal taxicab",
                "air taxi",
                "Privately Owned Taxi",
                "non-smoking taxi",
                "Lillebil",
                "motorcycle taxi",
                "taxicabs of New York City",
                "Délman",
                "Kalesa",
                "taxi motorcycle",
                "Treintaxi",
                "taxi operation",
                "Toyota Limo",
                "taxicabs of Hong Kong",
                "share taxi",
                "Westcoaster Mailster",
                "Honda NL125",
                "Nayor",
                "motorized tricycle",
                "white card",
                "online motorcycle taxi service",
                "Urban taxi",
                "New Territories taxi",
                "Lantau taxi",
                "dolmuş",
                "louage",
                "matatu",
                "Tap tap",
                "bush taxi",
                "68VM Passenger"
            ],
            "aliasCount": 32,
            "merged": 32,
            "knownIn": 113,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q82650",
                "url": "https://www.wikidata.org/wiki/Q82650",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T10:22:43Z",
                "providers": [
                    "Codex",
                    "Grok"
                ],
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": 0.00208896,
                        "turns": 1,
                        "seconds": 16,
                        "error": null
                    },
                    "codex": {
                        "seconds": 71.7,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\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: 01a07b63-2cc9-7133-a2da-c41cfa6ad713\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: taxi\nRegistry id: vr.tr.taxi\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy model s"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q82650",
                "registryId": "vr.tr.taxi",
                "name": "taxi",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q82650/",
            "model": {
                "registry_id": "vr.tr.taxi",
                "name": "taxi",
                "purpose": "Enable an AI agent to recognise a taxi, assess its readiness for a proposed passenger trip and determine which service actions are supported by recorded evidence.",
                "definition": "A motor vehicle licensed and hired, with a driver, to carry passengers on a public-hire or pre-booked trip for a fare, typically metered or otherwise regulated.",
                "scope_statement": "This model owns the physical passenger vehicle in its taxi role, including evidence of that role, passenger suitability, service availability, fare equipment and constraints on its use.",
                "in_scope": [
                    "Vehicle identity and evidence linking it to a taxi role",
                    "Taxi authorisation scope and vehicle-specific operating restrictions",
                    "Passenger, luggage and accessibility suitability",
                    "Physical readiness and current taxi service state",
                    "Fare equipment, passenger information and service accountability links"
                ],
                "out_of_scope": [
                    "Driver identity, qualifications, employment and working hours",
                    "Operator business structure and fleet management",
                    "Individual bookings, passenger contracts and trip histories",
                    "Road networks, traffic conditions and taxi-rank infrastructure",
                    "Jurisdiction-wide transport rules and tariff policies",
                    "Payment transactions, insurance contracts and maintenance procedures"
                ],
                "distinguishing_features": [
                    "Evidence connects the particular vehicle to a taxi role; paint, a roof sign or a driver's assertion alone leaves that role unverified.",
                    "Recorded service permissions distinguish its taxi role from private hire, ride-hail-only or private-car use where the applicable jurisdiction makes those distinctions.",
                    "Its service role concerns passenger carriage for hire, distinguishing it from a vehicle used solely for goods delivery or private travel.",
                    "A vehicle's taxi identity remains separately recordable when it is occupied, reserved or off duty; immediate availability is not the identity test.",
                    "The record denotes a physical vehicle, distinguishing it from a taxi company, dispatch application or booked ride."
                ],
                "characteristics": [
                    {
                        "name": "Vehicle identity linkage",
                        "kind": "relation",
                        "unit_or_values": "Links between the physical vehicle, registration identifiers and taxi authorisation evidence",
                        "why_it_matters": "Prevents a permit, booking or complaint from being attributed to the wrong vehicle."
                    },
                    {
                        "name": "Taxi role verification",
                        "kind": "state",
                        "unit_or_values": "Verified, unverified, disputed, formerly authorised; with evidence and assessment time",
                        "why_it_matters": "Separates demonstrated taxi status from appearance or unsupported claims."
                    },
                    {
                        "name": "Authorisation scope",
                        "kind": "relation",
                        "unit_or_values": "Applicable authority, authorisation record, validity period, operating area and restrictions",
                        "why_it_matters": "Supports assessment of whether the vehicle may perform a proposed taxi service."
                    },
                    {
                        "name": "Passenger acquisition permissions",
                        "kind": "category",
                        "unit_or_values": "Street hail, rank pickup, advance booking, dispatch or other locally defined modes; permitted, prohibited or unknown for each",
                        "why_it_matters": "A taxi's ability to accept one type of request does not establish permission for every pickup mode."
                    },
                    {
                        "name": "Service availability",
                        "kind": "state",
                        "unit_or_values": "Available, reserved, occupied, off duty, unavailable or unknown; with observation time",
                        "why_it_matters": "Determines whether the vehicle can be considered for a new request."
                    },
                    {
                        "name": "Usable passenger capacity",
                        "kind": "measurement",
                        "unit_or_values": "Number of usable passenger places excluding the driver, for the current seating configuration",
                        "why_it_matters": "Establishes whether the proposed passenger group fits without relying on nominal vehicle capacity."
                    },
                    {
                        "name": "Accessibility configuration",
                        "kind": "category",
                        "unit_or_values": "Recorded boarding method, wheelchair accommodation, restraint provision and passenger transfer requirements",
                        "why_it_matters": "Supports matching to specific access needs rather than a single ambiguous accessible label."
                    },
                    {
                        "name": "Luggage accommodation",
                        "kind": "measurement",
                        "unit_or_values": "Usable luggage volume in litres and relevant opening or clearance dimensions in millimetres, for the current configuration",
                        "why_it_matters": "Helps assess whether luggage and mobility equipment can be carried alongside the passengers."
                    },
                    {
                        "name": "Taxi equipment readiness",
                        "kind": "state",
                        "unit_or_values": "Present, operational, faulty, absent, not applicable or unknown for each required service device",
                        "why_it_matters": "Identifies equipment conditions that may prevent or constrain taxi service."
                    },
                    {
                        "name": "Fare basis",
                        "kind": "category",
                        "unit_or_values": "Metered, fixed, pre-agreed, externally calculated or unknown; linked to applicable terms",
                        "why_it_matters": "Makes the basis of the proposed charge inspectable before acceptance."
                    }
                ],
                "affordances": [
                    "Identify the vehicle and verify evidence supporting its taxi role.",
                    "Assess whether a proposed pickup mode and journey fit recorded operating permissions.",
                    "Match passenger, accessibility and luggage requirements to the vehicle's current configuration.",
                    "Request or assign service through a linked booking or dispatch channel when availability supports it.",
                    "Inspect fare information and service equipment before proceeding with a trip.",
                    "Flag service-limiting faults or identity discrepancies and route them to the responsible operator."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "taxi-identity-and-permissions",
                        "name": "Taxi identity and permissions",
                        "description": "Establishes which physical vehicle is being assessed and what evidence supports its taxi role.",
                        "rationale": "Taxi appearance, taxi authorisation and permission for a particular pickup are separate claims that an agent must distinguish.",
                        "layers": [
                            {
                                "id": "vehicle-to-taxi-linkage",
                                "name": "Vehicle-to-taxi linkage",
                                "description": "Connects observed vehicle identifiers to evidence of taxi designation.",
                                "findings": [
                                    {
                                        "id": "taxi-role-evidence",
                                        "name": "Taxi role evidence",
                                        "description": "Record the evidence supporting taxi status, its association with this vehicle and any conflicting identifiers.",
                                        "questions": [
                                            {
                                                "text": "Which identifiers connect the observed vehicle to the taxi authorisation or designation record?",
                                                "kind": "provenance",
                                                "id": "taxi-role-evidence-q01"
                                            },
                                            {
                                                "text": "What evidence would distinguish this taxi from a private vehicle displaying similar markings?",
                                                "kind": "boundary",
                                                "id": "taxi-role-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "service-permission-envelope",
                                "name": "Service permission envelope",
                                "description": "Captures the vehicle-specific applicability of externally defined taxi operating permissions.",
                                "findings": [
                                    {
                                        "id": "permitted-pickups-and-journeys",
                                        "name": "Permitted pickups and journeys",
                                        "description": "Record authorised service modes, geographic or temporal restrictions and unresolved applicability to the proposed trip.",
                                        "questions": [
                                            {
                                                "text": "Which evidence establishes the permitted pickup modes and operating area for this vehicle?",
                                                "kind": "provenance",
                                                "id": "permitted-pickups-and-journeys-q01"
                                            },
                                            {
                                                "text": "Does the proposed pickup and journey fit those permissions, or require an additional check?",
                                                "kind": "action",
                                                "id": "permitted-pickups-and-journeys-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "passenger-and-luggage-fit",
                        "name": "Passenger and luggage fit",
                        "description": "Describes whether this taxi can accommodate the proposed passengers and their belongings.",
                        "rationale": "A taxi can be available yet unsuitable because of seating configuration, boarding requirements or luggage constraints.",
                        "layers": [
                            {
                                "id": "boarding-and-access",
                                "name": "Boarding and access",
                                "description": "Records the boarding arrangements relevant to passengers with specific access needs.",
                                "findings": [
                                    {
                                        "id": "accessible-trip-configuration",
                                        "name": "Accessible trip configuration",
                                        "description": "Describe the actual access equipment and configuration, including whether travel requires a transfer from a mobility device.",
                                        "questions": [
                                            {
                                                "text": "What boarding aids, clearances and wheelchair accommodation are available and operational?",
                                                "kind": "measurement",
                                                "id": "accessible-trip-configuration-q01"
                                            },
                                            {
                                                "text": "Can the passenger board and travel with their stated needs in the current configuration, and what assistance is required?",
                                                "kind": "action",
                                                "id": "accessible-trip-configuration-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "shared-cabin-capacity",
                                "name": "Shared cabin capacity",
                                "description": "Assesses passenger places and storage together for the intended trip.",
                                "findings": [
                                    {
                                        "id": "usable-trip-capacity",
                                        "name": "Usable trip capacity",
                                        "description": "Record usable passenger places and luggage accommodation after accounting for occupied space, equipment and configuration changes.",
                                        "questions": [
                                            {
                                                "text": "How many passenger places remain usable with the required wheelchair, child-seat or other equipment configuration?",
                                                "kind": "measurement",
                                                "id": "usable-trip-capacity-q01"
                                            },
                                            {
                                                "text": "Can the proposed luggage and mobility equipment be accommodated without obstructing passenger places, restraints or exits?",
                                                "kind": "action",
                                                "id": "usable-trip-capacity-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "taxi-service-readiness",
                        "name": "Taxi service readiness",
                        "description": "Separates willingness and availability to accept a trip from the vehicle's physical ability to carry it out.",
                        "rationale": "An empty taxi is not necessarily available, and an available indication does not establish that the vehicle is ready for service.",
                        "layers": [
                            {
                                "id": "availability-and-commitments",
                                "name": "Availability and commitments",
                                "description": "Interprets taxi availability signals alongside current service commitments.",
                                "findings": [
                                    {
                                        "id": "acceptance-state",
                                        "name": "Acceptance state",
                                        "description": "Record whether the taxi can accept a new request, using timestamped observations and linked reservation or dispatch evidence.",
                                        "questions": [
                                            {
                                                "text": "What do the vehicle's availability indicator and linked dispatch status report, and when were they observed?",
                                                "kind": "provenance",
                                                "id": "acceptance-state-q01"
                                            },
                                            {
                                                "text": "Is there sufficient evidence to offer this taxi for a new request, given any reservation or current passenger commitment?",
                                                "kind": "action",
                                                "id": "acceptance-state-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "passenger-service-condition",
                                "name": "Passenger service condition",
                                "description": "Captures vehicle and cabin conditions that affect readiness for the proposed taxi trip.",
                                "findings": [
                                    {
                                        "id": "service-limiting-condition",
                                        "name": "Service-limiting condition",
                                        "description": "Record faults, cabin conditions and vehicle-readiness evidence relevant to carrying passengers, with links to inspection or maintenance records.",
                                        "questions": [
                                            {
                                                "text": "What current observations or inspection records identify faults affecting passenger access, restraints, cabin use or vehicle operation?",
                                                "kind": "provenance",
                                                "id": "service-limiting-condition-q01"
                                            },
                                            {
                                                "text": "Which recorded conditions require the taxi to be withheld from the proposed trip or checked before assignment?",
                                                "kind": "action",
                                                "id": "service-limiting-condition-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "fare-interface-and-accountability",
                        "name": "Fare interface and accountability",
                        "description": "Makes the taxi's charging interface and responsible service parties identifiable.",
                        "rationale": "An agent needs to establish how the proposed fare is determined and how the vehicle can be traced if service evidence is disputed.",
                        "layers": [
                            {
                                "id": "fare-and-payment-interface",
                                "name": "Fare and payment interface",
                                "description": "Records the fare basis, applicable equipment and supported payment interface without owning transaction records.",
                                "findings": [
                                    {
                                        "id": "charge-basis-and-equipment",
                                        "name": "Charge basis and equipment",
                                        "description": "Link the proposed fare basis to its terms and record the readiness of any equipment needed to calculate, display or collect it.",
                                        "questions": [
                                            {
                                                "text": "What establishes whether this trip uses a meter, fixed fare, prior agreement or external fare calculation?",
                                                "kind": "provenance",
                                                "id": "charge-basis-and-equipment-q01"
                                            },
                                            {
                                                "text": "Are the fare display and supported payment facilities needed for this trip operational, or is an alternative explicitly supported?",
                                                "kind": "action",
                                                "id": "charge-basis-and-equipment-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "service-party-traceability",
                                "name": "Service party traceability",
                                "description": "Connects the physical taxi to the parties and identifiers needed for service follow-up.",
                                "findings": [
                                    {
                                        "id": "responsible-party-links",
                                        "name": "Responsible party links",
                                        "description": "Record vehicle-specific links to the operator, dispatch provider and relevant oversight contact, preserving uncertainty where responsibilities differ.",
                                        "questions": [
                                            {
                                                "text": "Which evidence links this taxi to the operator or service provider responsible at the relevant time?",
                                                "kind": "provenance",
                                                "id": "responsible-party-links-q01"
                                            },
                                            {
                                                "text": "Which vehicle identifier and contact route should accompany a lost-property request, equipment fault report or service complaint?",
                                                "kind": "action",
                                                "id": "responsible-party-links-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-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "hackney carriage / street-hail taxi",
                                            "private-hire vehicle / minicab",
                                            "ridesourcing / TNC vehicle",
                                            "airport taxi",
                                            "wheelchair-accessible taxi",
                                            "water taxi",
                                            "shared taxi / jitney",
                                            "autonomous robotaxi"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of taxi this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does this registry entry include motorcycle taxis, three-wheel taxis and water taxis, or only road passenger cars?",
                "Where jurisdictions distinguish taxis, private-hire vehicles and ride-hail services differently, what evidence and terminology should determine inclusion?",
                "Should a permanently decommissioned taxi remain an instance of this model with a former role, and what ends its active taxi identity?",
                "Which sources can authoritatively establish vehicle-specific permissions and availability, and how should conflicting or stale evidence be handled?",
                "Which accessibility, fare-equipment and passenger-service requirements apply in each supported jurisdiction, and how should those external requirements be linked?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 9,
                "questions": 17
            }
        },
        "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 taxi, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a taxi, assess its readiness for a proposed passenger trip and determine which service actions are supported by recorded evidence.",
            "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: autorickshaw, Van taxi, illegal taxicab, air taxi, Privately Owned Taxi, non-smoking taxi, Lillebil, motorcycle taxi, taxicabs of New York City, Délman, Kalesa, taxi motorcycle.",
                "32 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 113 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 taxi, 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": [
                        "autorickshaw",
                        "Van taxi",
                        "illegal taxicab",
                        "air taxi",
                        "Privately Owned Taxi",
                        "non-smoking taxi",
                        "Lillebil",
                        "motorcycle taxi",
                        "taxicabs of New York City",
                        "Délman",
                        "Kalesa",
                        "taxi motorcycle"
                    ]
                }
            ],
            "standing": "Described in 113 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 32 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 taxi from another, and a taxi 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 taxi, 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 taxi, 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 taxi 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 taxi, 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 taxi, 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 taxi 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 taxi 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 taxi, 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 taxi, 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 taxi 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 taxi from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a taxi, 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 taxi, 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 taxi 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 taxi 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 taxi, 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 taxi, 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 taxi 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 taxi is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a taxi, 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 taxi, 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 taxi 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 taxi is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a taxi, 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 taxi, 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 taxi 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 taxi 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 taxi is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a taxi, 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 taxi, 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 taxi 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 taxi 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 taxi, 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 taxi, 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 taxi 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 taxi 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 taxi between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a taxi, 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 taxi, 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 taxi 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 taxi, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a taxi 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 taxi, 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 taxi, 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 taxi 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 taxi 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 taxi 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 taxi, 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 taxi 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 taxi 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 taxi 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 taxi 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 taxi 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 taxi, 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 taxi 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 taxi and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a taxi, 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 taxi, 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 taxi 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 taxi is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a taxi, 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 taxi, 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 taxi 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
            }
        }
    }
}