{
    "model": {
        "rank": 6247,
        "code": "thing-q208322",
        "model_id": "vr.tr.carousel",
        "name": "carousel",
        "purpose": "Enable an AI agent to recognise a passenger carousel, assess its recorded operating condition and determine whether boarding, riding, stopping or maintenance is appropriate.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q208322/",
        "tier": 2,
        "score": 61,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "Flic Flac",
                "steam carousel",
                "Tagada"
            ],
            "aliasCount": 3,
            "merged": 3,
            "knownIn": 61,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.carousel",
            "source": {
                "dataset": "wikidata",
                "item": "Q208322",
                "url": "https://www.wikidata.org/wiki/Q208322",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T13:23:52Z",
                "providers": [
                    "Codex",
                    "Grok"
                ],
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": 0.03342422,
                        "turns": 2,
                        "seconds": 106.7,
                        "error": null
                    },
                    "codex": {
                        "seconds": 73.7,
                        "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: 01a07c08-7fa4-7001-9e00-0d22d619937d\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: carousel\nRegistry id: vr.tr.carousel\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q208322",
                "registryId": "vr.tr.carousel",
                "name": "carousel",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q208322/",
            "model": {
                "registry_id": "vr.tr.carousel",
                "name": "carousel",
                "purpose": "Enable an AI agent to recognise a passenger carousel, assess its recorded operating condition and determine whether boarding, riding, stopping or maintenance is appropriate.",
                "definition": "A carousel is a passenger-carrying amusement machine whose primary motion is rotation of a circular platform, and often of animal- or chariot-form seats on crank-driven poles, about a near-vertical axis at low angular speed for leisure riding.",
                "scope_statement": "Provisionally, this model owns the physical passenger amusement carousel: its rotating assembly, rider positions, supporting mechanisms, boarding interfaces and operating states; research must confirm this meaning because the registry records no definition.",
                "in_scope": [
                    "Rotating passenger assembly, central axis and supporting structure",
                    "Rider positions, decorative mounts, seating and any associated restraints",
                    "Drive, braking and mechanisms that produce additional rider motion",
                    "Boarding edges, entrances, gates and interfaces with stationary surroundings",
                    "Operating modes, protective functions and carousel-specific service condition"
                ],
                "out_of_scope": [
                    "Baggage carousels and industrial rotary storage or handling equipment",
                    "Digital image carousels and other interface components",
                    "Park-wide ticketing, queue management and visitor services",
                    "Individual rider identity, health records and consent",
                    "Site-wide utilities, buildings and emergency response arrangements"
                ],
                "distinguishing_features": [
                    "The provisional referent carries people at rider positions that repeatedly travel around a common central axis.",
                    "Its intended service is a passenger amusement experience; an installation circulating luggage or workpieces requires a different scope decision.",
                    "Rider positions are carried by a common rotating assembly; a circular track alone does not establish that an object is a carousel.",
                    "Animal figures, music and a canopy are supporting identification evidence, not required identification tests.",
                    "Suspended swing rides and manually propelled playground roundabouts require an explicit registry boundary decision rather than classification by circular motion alone."
                ],
                "characteristics": [
                    {
                        "name": "Carousel referent",
                        "kind": "category",
                        "unit_or_values": "passenger amusement carousel | alternative physical referent | unresolved",
                        "why_it_matters": "Prevents the absence of a registry definition from becoming an unnoticed classification assumption."
                    },
                    {
                        "name": "Rotating assembly diameter",
                        "kind": "measurement",
                        "unit_or_values": "m, with measurement boundary stated",
                        "why_it_matters": "Describes the assembly's physical extent and supports assessment of boarding geometry and surrounding clearances."
                    },
                    {
                        "name": "Rider position configuration",
                        "kind": "category",
                        "unit_or_values": "Recorded inventory of fixed seats, moving mounts, benches, accessible positions or other position types",
                        "why_it_matters": "Different positions may impose different boarding, support and operating conditions."
                    },
                    {
                        "name": "Position-specific occupancy limit",
                        "kind": "measurement",
                        "unit_or_values": "persons and, where documented, kg per identified position",
                        "why_it_matters": "Supports loading decisions without treating every mount or bench as interchangeable."
                    },
                    {
                        "name": "Rotational speed",
                        "kind": "measurement",
                        "unit_or_values": "rpm, distinguishing observed speed from documented permitted range",
                        "why_it_matters": "Allows observed movement to be compared with the applicable operating conditions."
                    },
                    {
                        "name": "Additional rider motion",
                        "kind": "category",
                        "unit_or_values": "none | vertical reciprocation | local rotation | other documented motion | unknown",
                        "why_it_matters": "Identifies motion and clearance requirements beyond rotation of the main assembly."
                    },
                    {
                        "name": "Motion envelope",
                        "kind": "measurement",
                        "unit_or_values": "m, referenced to identified moving parts and operating configuration",
                        "why_it_matters": "Supports checking separation from stationary structures and other moving parts."
                    },
                    {
                        "name": "Operating mode",
                        "kind": "state",
                        "unit_or_values": "boarding | ready | running | stopping | faulted | isolated for service | unknown",
                        "why_it_matters": "Determines which actions can be considered at the time of observation."
                    },
                    {
                        "name": "Protective function condition",
                        "kind": "state",
                        "unit_or_values": "For each fitted function: verified available | failed | bypassed | unverified",
                        "why_it_matters": "Prevents a fitted gate switch, stop control or restraint check from being assumed effective."
                    },
                    {
                        "name": "Applicable operating documentation",
                        "kind": "relation",
                        "unit_or_values": "Links to identified manufacturer instructions, configuration records and applicable inspection evidence",
                        "why_it_matters": "Provides the basis for instance-specific limits and release decisions."
                    }
                ],
                "affordances": [
                    "Identify the carousel configuration and map its rider positions and moving mechanisms.",
                    "Assess whether an identified rider position is available for boarding under documented conditions.",
                    "Compare observed rotation and mount movement with recorded operating limits.",
                    "Request or perform an authorised start, normal stop or emergency stop when the relevant conditions are established.",
                    "Restrict use of a rider position or the whole carousel when a defect or unresolved protective condition requires it.",
                    "Plan inspection or maintenance using the recorded motion mechanisms and isolation requirements."
                ]
            },
            "sources": [
                {
                    "id": "wikidata-q208322",
                    "title": "carousel (Q208322)",
                    "url": "https://www.wikidata.org/wiki/Q208322",
                    "what_it_supports": "Canonical identifier, English gloss as a rotating circular-platform amusement ride, aliases (merry-go-round, galloper, jumper, roundabout), Unicode 🎠, MCN 9508.90.20, and the distinction from traffic roundabout.",
                    "url_status": "live"
                },
                {
                    "id": "coasterpedia-carousel",
                    "title": "Carousel",
                    "url": "https://coasterpedia.net/wiki/Carousel",
                    "what_it_supports": "Industry distinction between carousel and gallopers, horse positions (standers, prancers, jumpers), rotation-direction practice, and double-decker variants.",
                    "url_status": "live"
                },
                {
                    "id": "astm-f2291",
                    "title": "ASTM F2291 Standard Practice for Design of Amusement Rides and Devices",
                    "url": "https://blog.ansi.org/ansi/astm-f2291-25-standard-practice-amusement-rides/",
                    "what_it_supports": "US design practice for amusement rides including restraint, clearance envelope, acceleration, loads, and state adoption of ASTM F24; carousel-class rides fall under this family rather than a carousel-only standard.",
                    "url_status": "blocked"
                },
                {
                    "id": "en-13814",
                    "title": "BS EN 13814-1:2019+A1:2024 Safety of amusement rides and amusement devices - Design and manufacture",
                    "url": "",
                    "what_it_supports": "European safety standard explicitly listing roundabouts among in-scope amusement devices, with companion parts on operation and inspection; ISO 17842-1:2023 is the aligned international counterpart."
                },
                {
                    "id": "en-1176-5",
                    "title": "EN 1176-5:2019 Playground equipment and surfacing - Additional specific safety requirements and test methods for carousels",
                    "url": "",
                    "what_it_supports": "Playground-carousel typology (rotating chairs, classic carousel, bowl-like types), definition of carousel diameter, axis, impact-area rules, and the >500 mm diameter scope."
                },
                {
                    "id": "tssa-542-21",
                    "title": "Advisory 542-21 Amusement Device Classifications",
                    "url": "https://www.tssa.org/sites/default/files/2023-10/AD-Device%2520Classifications-Advisory-542-21.pdf.pdf",
                    "what_it_supports": "Ontario classification of carousels as Simple amusement rides: low RPM and forces, low elevation, ASTM F2291 restraint class 1 or 2.",
                    "url_status": "live"
                },
                {
                    "id": "lmq-carousel-guide",
                    "title": "The Complete Carousel Guide: Mechanics, Parts, Maintenance, Buying and Pricing",
                    "url": "https://www.kidsamusementrides.com/news/carousels-guide/",
                    "what_it_supports": "Typical commercial ranges for platform diameter, height, motor power, rotation speed and cycle time across small to double-decker machines.",
                    "url_status": "blocked"
                },
                {
                    "id": "ja-wiki-mgr",
                    "title": "メリーゴーラウンド",
                    "url": "https://ja.wikipedia.org/wiki/%E3%83%A1%E3%83%AA%E3%83%BC%E3%82%B4%E3%83%BC%E3%83%A9%E3%82%A6%E3%83%B3%E3%83%89",
                    "what_it_supports": "Regional naming (US carousel, UK roundabout/merry-go-round, French carrousel/manège, Japanese merry-go-round/回転木馬) and the jumping-horse mechanism description.",
                    "url_status": "live"
                }
            ],
            "structure": {
                "bundles": [
                    {
                        "id": "carousel-identity-and-configuration",
                        "name": "Carousel identity and configuration",
                        "description": "Establishes which physical meaning of carousel applies and what passenger-carrying assembly is being modelled.",
                        "rationale": "The term alone does not establish whether this entry denotes an amusement ride or another rotating installation.",
                        "layers": [
                            {
                                "id": "referent-and-boundaries",
                                "name": "Referent and boundaries",
                                "description": "Records the evidence for classification and the limits of the modelled installation.",
                                "findings": [
                                    {
                                        "id": "passenger-carousel-identification",
                                        "name": "Passenger carousel identification",
                                        "description": "Record intended use and physical arrangement before applying passenger-carousel assumptions.",
                                        "questions": [
                                            {
                                                "text": "What evidence establishes that this instance is intended to carry passengers for amusement?",
                                                "kind": "definition",
                                                "id": "passenger-carousel-identification-q01"
                                            },
                                            {
                                                "text": "Does the registry include playground roundabouts or suspended swing carousels within this same entry?",
                                                "kind": "boundary",
                                                "id": "passenger-carousel-identification-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "rotating-assembly-and-rider-map",
                                "name": "Rotating assembly and rider map",
                                "description": "Identifies rotating decks or carriers and the rider positions attached to them.",
                                "findings": [
                                    {
                                        "id": "installed-passenger-configuration",
                                        "name": "Installed passenger configuration",
                                        "description": "Record the installed arrangement, including multiple levels or independently moving rider positions where present.",
                                        "questions": [
                                            {
                                                "text": "Which decks, carriers and rider positions belong to the same rotating assembly?",
                                                "kind": "definition",
                                                "id": "installed-passenger-configuration-q01"
                                            },
                                            {
                                                "text": "Which drawings or configuration records establish the installed arrangement and any later alterations?",
                                                "kind": "provenance",
                                                "id": "installed-passenger-configuration-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "rotation-and-secondary-motion",
                        "name": "Rotation and secondary motion",
                        "description": "Describes how the carousel rotates, how individual positions move and how those movements stop.",
                        "rationale": "Main rotation and additional mount motion create different operating limits, clearances and failure symptoms.",
                        "layers": [
                            {
                                "id": "main-rotation-and-stopping",
                                "name": "Main rotation and stopping",
                                "description": "Records the main drive, observed rotation and documented stopping behaviour.",
                                "findings": [
                                    {
                                        "id": "rotation-performance",
                                        "name": "Rotation performance",
                                        "description": "Separate measured performance from permitted values and record the conditions under which each applies.",
                                        "questions": [
                                            {
                                                "text": "What rotational speed, direction and stopping time are observed, and under what loading conditions?",
                                                "kind": "measurement",
                                                "id": "rotation-performance-q01"
                                            },
                                            {
                                                "text": "Which instance-specific instructions define permitted rotation and acceptable stopping behaviour?",
                                                "kind": "provenance",
                                                "id": "rotation-performance-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "mount-motion-and-clearance",
                                "name": "Mount motion and clearance",
                                "description": "Describes movement of rider positions relative to the main rotating assembly.",
                                "findings": [
                                    {
                                        "id": "secondary-motion-envelope",
                                        "name": "Secondary motion envelope",
                                        "description": "Record each additional movement and its relationship to nearby riders, mechanisms and fixed structures.",
                                        "questions": [
                                            {
                                                "text": "Which mounts reciprocate, rotate locally or otherwise move relative to the main assembly, and what are their travel ranges?",
                                                "kind": "measurement",
                                                "id": "secondary-motion-envelope-q01"
                                            },
                                            {
                                                "text": "Where does each moving position approach another mount, the deck, the canopy or a stationary structure?",
                                                "kind": "boundary",
                                                "id": "secondary-motion-envelope-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "rider-loading-and-boarding",
                        "name": "Rider loading and boarding",
                        "description": "Records how passengers enter, occupy rider positions and leave the carousel.",
                        "rationale": "A stopped carousel is not automatically ready for boarding, and different rider positions may have different use conditions.",
                        "layers": [
                            {
                                "id": "rider-position-suitability",
                                "name": "Rider position suitability",
                                "description": "Records position-specific occupancy, support and restraint requirements.",
                                "findings": [
                                    {
                                        "id": "position-use-conditions",
                                        "name": "Position use conditions",
                                        "description": "Associate each position type with documented loading and rider-support conditions rather than assuming a universal rule.",
                                        "questions": [
                                            {
                                                "text": "What occupancy, load, rider eligibility and accompaniment conditions are documented for each position type?",
                                                "kind": "provenance",
                                                "id": "position-use-conditions-q01"
                                            },
                                            {
                                                "text": "What checks of seating, handholds and any fitted restraints are required before that position may be used?",
                                                "kind": "action",
                                                "id": "position-use-conditions-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "stationary-to-rotating-transfer",
                                "name": "Stationary-to-rotating transfer",
                                "description": "Records the boarding route across the interface between stationary access areas and the rotating assembly.",
                                "findings": [
                                    {
                                        "id": "boarding-interface-readiness",
                                        "name": "Boarding interface readiness",
                                        "description": "Record boarding gaps, steps, gates and any movable access equipment together with their required operating states.",
                                        "questions": [
                                            {
                                                "text": "What gaps, level changes and route widths occur along each designated boarding route?",
                                                "kind": "measurement",
                                                "id": "boarding-interface-readiness-q01"
                                            },
                                            {
                                                "text": "What conditions must be established before boarding begins and before rotation can resume, including the position of any ramp or gate?",
                                                "kind": "action",
                                                "id": "boarding-interface-readiness-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "operating-readiness-and-service",
                        "name": "Operating readiness and service",
                        "description": "Connects carousel operating modes, protective functions and mechanism condition to permitted actions.",
                        "rationale": "Decisions to start, stop or service the carousel depend on evidence about its controls and passenger-carrying mechanisms.",
                        "layers": [
                            {
                                "id": "cycle-control-and-protection",
                                "name": "Cycle control and protection",
                                "description": "Records prerequisites for movement and the behaviour of fitted protective functions.",
                                "findings": [
                                    {
                                        "id": "movement-permission",
                                        "name": "Movement permission",
                                        "description": "Record how boarding completion, operating controls and protective conditions govern the next movement.",
                                        "questions": [
                                            {
                                                "text": "Which fitted controls or protective functions prevent rotation during boarding, and what evidence verifies their current operation?",
                                                "kind": "provenance",
                                                "id": "movement-permission-q01"
                                            },
                                            {
                                                "text": "After a normal stop, emergency stop or power interruption, what documented checks and reset actions are required before movement?",
                                                "kind": "action",
                                                "id": "movement-permission-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "mechanical-condition-and-isolation",
                                "name": "Mechanical condition and isolation",
                                "description": "Records defects in the rotating support and rider-motion mechanisms, plus the conditions for safe service access.",
                                "findings": [
                                    {
                                        "id": "carousel-service-disposition",
                                        "name": "Carousel service disposition",
                                        "description": "Connect observed defects and unresolved inspection items to position-level or whole-carousel restrictions.",
                                        "questions": [
                                            {
                                                "text": "What inspection evidence covers the rotating support, drive connections, rider-mount attachments and any reciprocating mechanisms?",
                                                "kind": "provenance",
                                                "id": "carousel-service-disposition-q01"
                                            },
                                            {
                                                "text": "For the identified defect or maintenance task, what use restrictions and measures against unintended rotation or mount movement are required by the applicable procedure?",
                                                "kind": "action",
                                                "id": "carousel-service-disposition-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": [
                                            "traditional wooden park carousel with mixed standers, prancers and jumpers",
                                            "gallopers (jumping horses, typically clockwise fairground machines)",
                                            "non-jumping carousel (fixed seats, often anticlockwise)",
                                            "double-decker carousel",
                                            "menagerie carousel (mixed animals rather than horses only)",
                                            "portable or traveling fairground carousel",
                                            "kiddie or Hampton-style small carousel",
                                            "playground carousel (EN 1176-5 rotating platforms and chairs, distinct from park rides)"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of carousel this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "scheme": "Wikidata",
                                                "value_or_pattern": "Q208322",
                                                "note": "Item 'carousel'; also said to be the same as merry-go-round; different from traffic roundabout."
                                            },
                                            {
                                                "scheme": "Unicode",
                                                "value_or_pattern": "U+1F3A0 (🎠 CAROUSEL HORSE)",
                                                "note": "Emoji named for the ride's characteristic figure, not a product identifier."
                                            },
                                            {
                                                "scheme": "Harmonized System / MCN",
                                                "value_or_pattern": "9508.90.20 (heading 9508)",
                                                "note": "Wikidata records MCN 9508.90.20; HS 9508 covers roundabouts, swings and other fairground amusements."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of carousel this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "ASTM F2291, Standard Practice for Design of Amusement Rides and Devices - ASTM International Committee F24 (widely adopted in US state ride law).",
                                            "ASTM F770, Standard Practice for Ownership, Operation, Maintenance, and Inspection of Amusement Rides and Devices - ASTM International Committee F24.",
                                            "EN 13814-1/2/3, Safety of amusement rides and amusement devices (design; operation; inspection) - CEN; national adoptions such as BS EN 13814 and NF EN 13814. Roundabouts are in the explicit scope of Part 1.",
                                            "ISO 17842-1:2023, Safety of amusement rides and amusement devices - Design and manufacture - ISO (aligned with the EN 13814:2019 series).",
                                            "EN 1176-5:2019, Playground equipment and surfacing - Additional specific safety requirements and test methods for carousels - CEN; Australian adoption AS 4685.5.",
                                            "Ontario TSSA Elevating and Amusement Devices Safety Program, Advisory 542-21 (2021): classifies carousels as Simple amusement rides under ASTM F2291 restraint classes 1-2."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of carousel this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Permanent centrepiece rides in amusement parks, seaside piers, municipal parks and shopping centres, ridden in 2-4 minute cycles under an operator.",
                                            "Portable fairground and carnival machines assembled for a season or a show, then transported.",
                                            "Heritage objects: late-19th/early-20th-century wooden machines (Herschell, Looff, Dentzel and others) listed on the US National Register of Historic Places and operated as living museum pieces.",
                                            "Children's playground spinning platforms and rotating chairs specified separately from park rides.",
                                            "Small coin-operated or kiddie carousels at arcades and fairs; some of those fall outside ASTM F2291 / EN 13814 if they are patron-activated and unsupervised."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of carousel this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "quantity": "platform diameter",
                                                "typical_range": "about 4-6 m (small 12-16 seat), 6-9 m (medium), 10-13 m (large), 10-14 m (double-decker); playground carousels are specified from just above 0.5 m, with some Type A rotating-chair limits around 2 m",
                                                "unit": "m"
                                            },
                                            {
                                                "quantity": "rotation speed",
                                                "typical_range": "about 1-4 r/min (slower on larger machines); playground and simple-class rides are specified as low RPM",
                                                "unit": "r/min"
                                            },
                                            {
                                                "quantity": "ride cycle duration",
                                                "typical_range": "about 2-4",
                                                "unit": "min"
                                            },
                                            {
                                                "quantity": "overall height",
                                                "typical_range": "about 3.5-9 m single-deck, 9.8-13.5 m double-decker",
                                                "unit": "m"
                                            },
                                            {
                                                "quantity": "drive power",
                                                "typical_range": "about 1.5-15",
                                                "unit": "kW"
                                            },
                                            {
                                                "quantity": "playground free height of fall / impact attenuation",
                                                "typical_range": "user-station height capped by type (EN 1176-5 Table 1); impact area attenuation at least the free height of fall and never less than 600 mm; some national playground texts cap fall height near 1000 mm",
                                                "unit": "mm"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of carousel this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Patron fall or ejection from a horse, chariot or platform, especially on restraint class 1-2 machines with no or optional restraints.",
                                            "Entrapment or crushing at the platform edge, between sweeps, or between a jumping figure and the floor or canopy.",
                                            "Fatigue or fracture of the centre pole, sweeps, crank/jumper mechanism, bearings or welds under cyclic rotation.",
                                            "Unexpected start, drive or brake failure, or loss of speed control.",
                                            "Impact with scenery, canopy, adjacent fencing or other riders during boarding while the machine is moving.",
                                            "Fire in historic wooden platforms, rounding boards and canvas tilts.",
                                            "Playground-specific: centrifugal throw-off and inadequate impact-attenuating surfacing in the safety zone (typically ≥2 m around the machine)."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of carousel this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "United States: 'carousel' is the usual name; machines typically rotate anticlockwise; carving is often grouped into Coney Island, Philadelphia and Country Fair styles.",
                                            "United Kingdom and much of the Commonwealth: 'merry-go-round', 'roundabout' or 'gallopers'; gallopers usually run clockwise with all horses jumping and no standers.",
                                            "France: 'carrousel' or 'manège'; the English amusement sense is borrowed from the French military carousel (a tournament display), not the other way around.",
                                            "Japan: メリーゴーラウンド / 回転木馬; 'carousel' appears mainly as a loanword on park signage.",
                                            "Regulation splits the name: park and fairground machines follow amusement-ride codes (ASTM F24 / EN 13814 / ISO 17842); playground spinning equipment follows EN 1176-5 / AS 4685.5 even when also called a carousel."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of carousel this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "name": "merry-go-round / gallopers",
                                                "difference": "In everyday English they are the same ride; trade usage sometimes reserves 'gallopers' for jumping-horse, usually clockwise fairground machines and 'carousel' for (often anticlockwise) machines that may include standers."
                                            },
                                            {
                                                "name": "traffic roundabout",
                                                "difference": "A highway intersection, not a passenger ride; Wikidata marks carousel (Q208322) as different from roundabout. UK 'roundabout' is ambiguous until the setting (road vs fairground) is fixed."
                                            },
                                            {
                                                "name": "airport baggage carousel",
                                                "difference": "A power-driven conveyor for luggage, not a passenger amusement device; no seats, no ride cycle, governed by airport/material-handling practice rather than ASTM F24 or EN 13814."
                                            },
                                            {
                                                "name": "chair-o-plane / wave swinger (Kettenkarussell)",
                                                "difference": "Riders hang from chained seats that swing out under rotation; there is no walking platform of figures on poles."
                                            },
                                            {
                                                "name": "Ferris wheel",
                                                "difference": "Rotation is about a horizontal axis with suspended cars; a carousel's primary axis is vertical or only slightly inclined."
                                            },
                                            {
                                                "name": "teacups, scrambler, tilt-a-whirl",
                                                "difference": "Rotating amusement rides whose passenger units have additional spin or undulating paths and are classed above Simple in schemes such as TSSA 542-21; a carousel's passenger motion is essentially circular about one vertical axis, with optional simple heave of jumpers."
                                            },
                                            {
                                                "name": "warehouse or vertical storage carousel",
                                                "difference": "An automated storage and retrieval machine that presents bins to an operator; it carries goods, not leisure passengers."
                                            },
                                            {
                                                "name": "UI image carousel",
                                                "difference": "A software widget that cycles visual items; not a physical machine (outside PHY.OBJ except as a metaphor)."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of carousel this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does vr.tr.carousel specifically denote a passenger amusement carousel, or must it also cover baggage, storage or other physical carousels?",
                "Are playground roundabouts and suspended swing carousels included here or owned by neighbouring registry entries?",
                "Does an existing Vercy world model already own this concept, requiring this registry entry to link to it?",
                "Which authoritative sources establish configuration-specific operating limits, rider conditions, protective functions and inspection criteria?",
                "Where should the ownership boundary fall between the carousel and its foundation, perimeter barriers, access equipment and decorative superstructure?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 16,
                "questions": 24
            }
        },
        "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 carousel, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a passenger carousel, assess its recorded operating condition and determine whether boarding, riding, stopping or maintenance is appropriate.",
            "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: Flic Flac, steam carousel, Tagada.",
                "3 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 61 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 carousel, 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": [
                        "Flic Flac",
                        "steam carousel",
                        "Tagada"
                    ]
                }
            ],
            "standing": "Described in 61 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 3 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 carousel from another, and a carousel 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 carousel, 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 carousel, 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 carousel 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 carousel, 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 carousel, 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 carousel 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 carousel 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 carousel, 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 carousel, 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 carousel 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 carousel from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a carousel, 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 carousel, 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 carousel 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 carousel 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 carousel, 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 carousel, 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 carousel 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 carousel is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a carousel, 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 carousel, 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 carousel 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 carousel is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a carousel, 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 carousel, 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 carousel 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 carousel 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 carousel is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a carousel, 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 carousel, 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 carousel 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 carousel 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 carousel, 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 carousel, 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 carousel 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 carousel 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 carousel between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a carousel, 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 carousel, 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 carousel 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 carousel, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a carousel 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 carousel, 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 carousel, 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 carousel 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 carousel 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 carousel 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 carousel, 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 carousel 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 carousel 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 carousel 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 carousel 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 carousel 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 carousel, 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 carousel 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 carousel and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a carousel, 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 carousel, 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 carousel 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 carousel is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a carousel, 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 carousel, 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 carousel 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
            }
        }
    }
}