{ "model": { "rank": 5669, "code": "thing-q183998", "model_id": "vr.tr.camera-obscura", "name": "camera obscura", "purpose": "Enable an agent to recognise a camera obscura, assess its ability to form a viewable optical image, and determine appropriate viewing, adjustment and maintenance actions.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.OBJ", "industry": "", "version": "", "url": "/models/thing/q183998/", "tier": 2, "score": 65, "payload": { "layer": "wikidata", "aliases": [], "aliasCount": 0, "merged": 0, "knownIn": 65, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q183998", "url": "https://www.wikidata.org/wiki/Q183998", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T08:57:05Z", "providers": [ "Codex" ], "missingProviders": [ "Grok" ], "pass": 2, "cost": { "grok": { "usd": null, "turns": null, "seconds": 15.8, "error": "Error: Internal error: {\n \"message\": \"API error (status 402 Payment Required): Grok Build usage balance exhausted\",\n \"http_status\": 402\n}", "retried": true }, "codex": { "seconds": 79.6, "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: 01a07b14-a94d-7d22-827e-6d1c69d4cb31\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: camera obscura\nRegistry id: vr.tr.camera-obscura\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (no" } } }, "metaModel": { "id": "THING-Q183998", "registryId": "vr.tr.camera-obscura", "name": "camera obscura", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q183998/", "model": { "registry_id": "vr.tr.camera-obscura", "name": "camera obscura", "purpose": "Enable an agent to recognise a camera obscura, assess its ability to form a viewable optical image, and determine appropriate viewing, adjustment and maintenance actions.", "definition": "", "scope_statement": "This model owns the camera obscura as a darkened chamber or enclosure that admits light from an external scene through a restricted aperture, optionally using lenses and mirrors, to form an image on an interior receiving surface.", "in_scope": [ "The darkened enclosure, intentional light entrance and unwanted light leakage", "The aperture, optional lens and optional mirrors that establish the image-forming light path", "The receiving surface and means of viewing the projected image", "The relationship between scene illumination, optical configuration and image visibility", "Adjustments and physical conditions that determine usable projection" ], "out_of_scope": [ "Photographic film, electronic sensors and image-recording workflows", "The external scene, landscape or astronomical object being observed", "Building structure and occupancy management beyond their interface with a room-sized camera obscura", "Projectors that illuminate a slide, display or other internal image source", "Ownership, exhibition programming and historical interpretation of the installation" ], "distinguishing_features": [ "Establish whether light arriving from an external scene forms a spatial image inside a darkened enclosure, rather than merely illuminating the interior.", "Trace image formation through a restricted opening, with or without a lens; a simple window view does not satisfy this test.", "Identify an interior surface on which the image can be viewed; recording on film or a sensor is not required for its camera-obscura function.", "Distinguish the projected image from a camera-lucida viewing arrangement, which does not project the scene onto a surface inside a darkened enclosure.", "For equipment also functioning as a photographic camera, identify the camera-obscura configuration without treating the recording subsystem as part of this model." ], "characteristics": [ { "name": "Enclosure form", "kind": "category", "unit_or_values": "room-sized chamber | portable box | tent or collapsible chamber | other documented form", "why_it_matters": "Determines where the image is received, how viewers access it and which adjustments are practical." }, { "name": "Image-forming entrance", "kind": "category", "unit_or_values": "pinhole | lens-equipped aperture | other documented arrangement | undetermined", "why_it_matters": "Determines which focusing and aperture adjustments are applicable." }, { "name": "Entrance opening dimensions", "kind": "measurement", "unit_or_values": "mm; diameter or measured opening shape and dimensions", "why_it_matters": "Constrains admitted light and image formation; its effect depends on the optical configuration." }, { "name": "Lens focal length", "kind": "measurement", "unit_or_values": "mm, with measurement or identification method; not applicable when lensless", "why_it_matters": "Helps interpret achievable focus and scene coverage in lens-equipped configurations." }, { "name": "Entrance-to-receiving-surface geometry", "kind": "relation", "unit_or_values": "positions and orientations of entrance, optical elements and receiving surface, with path-segment lengths in mm or m", "why_it_matters": "Locates the image plane and distinguishes straight from folded optical paths." }, { "name": "Unwanted light ingress", "kind": "state", "unit_or_values": "not detected under stated test | detected with location and effect | untested", "why_it_matters": "Stray light can obscure the projected image even when the intended optical path is intact." }, { "name": "Receiving surface", "kind": "category", "unit_or_values": "opaque reflective screen | translucent screen | wall | table | other documented surface", "why_it_matters": "Determines viewing side, image presentation and appropriate surface care." }, { "name": "Image orientation relative to scene", "kind": "relation", "unit_or_values": "observed top-bottom and left-right mapping, rotation and viewer side", "why_it_matters": "Prevents incorrect interpretation where mirrors or rear viewing alter apparent orientation." }, { "name": "Projection usability", "kind": "state", "unit_or_values": "usable for stated task | visible with limitations | no discernible image | untested, with scene and viewing conditions", "why_it_matters": "Separates a functional assessment from assumptions based solely on the presence of components." } ], "affordances": [ "Admit or block scene light using the existing aperture cover or shutter.", "Aim the entrance or an installed steering mirror toward an authorised viewing scene.", "Adjust supported aperture, lens or screen positions while observing the effect on the image.", "Darken the chamber and locate light leaks that reduce image visibility.", "View, compare or trace the projected image where the receiving surface and access arrangement permit.", "Inspect and maintain accessible optical surfaces, screens and seals using methods suitable for their materials." ] }, "sources": [], "structure": { "bundles": [ { "id": "scene-to-image-path", "name": "Scene-to-image path", "description": "Establishes how external scene light enters the chamber and reaches the image surface.", "rationale": "Recognition depends on an actual image-forming arrangement, not merely a dark box with an opening.", "layers": [ { "id": "light-entrance", "name": "Light entrance", "description": "Identifies the intended entrance and its role in forming the image.", "findings": [ { "id": "entrance-configuration", "name": "Entrance configuration", "description": "Records whether the entrance is a pinhole or lens-equipped opening and how it admits scene light.", "questions": [ { "text": "Which opening admits the external scene light, and is image formation lensless or lens-assisted?", "kind": "definition", "id": "entrance-configuration-q01" }, { "text": "What are the opening dimensions and any documented lens parameters in the current configuration?", "kind": "measurement", "id": "entrance-configuration-q02" } ] } ] }, { "id": "optical-route", "name": "Optical route", "description": "Connects the entrance to the receiving surface through any intervening optics.", "findings": [ { "id": "path-and-reflections", "name": "Path and reflections", "description": "Records the sequence, placement and orientation of components carrying the image-forming light.", "questions": [ { "text": "What route does light follow from the entrance to the receiving surface, including each lens and mirror?", "kind": "definition", "id": "path-and-reflections-q01" }, { "text": "Which path segments are obstructed, misaligned or outside the usable area of an optical element?", "kind": "measurement", "id": "path-and-reflections-q02" } ] } ] } ] }, { "id": "dark-chamber-and-image-surface", "name": "Dark chamber and image surface", "description": "Describes the controlled interior darkness and the surface that makes the projected image available to a viewer.", "rationale": "A working optical entrance alone does not establish that the image can be seen inside the device.", "layers": [ { "id": "chamber-darkness", "name": "Chamber darkness", "description": "Assesses unintended illumination under the intended viewing conditions.", "findings": [ { "id": "leaks-and-interior-light", "name": "Leaks and interior light", "description": "Locates unwanted light and records its observed effect on image visibility.", "questions": [ { "text": "With the intended entrance covered, where does light remain visible inside the chamber?", "kind": "measurement", "id": "leaks-and-interior-light-q01" }, { "text": "Which closures, seals or interior lights can be adjusted to improve darkness while preserving necessary access?", "kind": "action", "id": "leaks-and-interior-light-q02" } ] } ] }, { "id": "image-reception", "name": "Image reception", "description": "Identifies the surface receiving the image and the viewing arrangement.", "findings": [ { "id": "screen-and-viewing-side", "name": "Screen and viewing side", "description": "Records receiving-surface geometry, optical character and viewer position.", "questions": [ { "text": "On which surface does the image form, and is it viewed by reflection or transmission?", "kind": "definition", "id": "screen-and-viewing-side-q01" }, { "text": "What are the usable surface dimensions, position and orientation relative to the arriving light?", "kind": "measurement", "id": "screen-and-viewing-side-q02" } ] } ] } ] }, { "id": "projected-image-performance", "name": "Projected image performance", "description": "Assesses the image produced by a specified scene and device configuration.", "rationale": "An agent must distinguish an unsuitable scene or setting from deterioration or failure of the camera obscura.", "layers": [ { "id": "visibility-and-detail", "name": "Visibility and detail", "description": "Evaluates whether the image supports the intended observation or tracing task.", "findings": [ { "id": "task-based-image-quality", "name": "Task-based image quality", "description": "Records discernible detail, brightness and contrast together with test conditions.", "questions": [ { "text": "Under what scene illumination and interior viewing conditions can the required features be distinguished?", "kind": "measurement", "id": "task-based-image-quality-q01" }, { "text": "How do available aperture, lens or screen adjustments change visible detail and brightness?", "kind": "action", "id": "task-based-image-quality-q02" } ] } ] }, { "id": "scene-mapping", "name": "Scene mapping", "description": "Relates visible image content to the external scene.", "findings": [ { "id": "coverage-and-orientation", "name": "Coverage and orientation", "description": "Records scene coverage, image orientation and areas lost through clipping or obstruction.", "questions": [ { "text": "Using identifiable scene features, what top-bottom and left-right mapping is observed from the stated viewing side?", "kind": "measurement", "id": "coverage-and-orientation-q01" }, { "text": "Which parts of the intended scene fall outside the receiving surface or are obscured along the optical path?", "kind": "boundary", "id": "coverage-and-orientation-q02" } ] } ] } ] }, { "id": "configuration-and-permitted-operation", "name": "Configuration and permitted operation", "description": "Connects the installed adjustment mechanisms and component condition to justified operating actions.", "rationale": "Camera obscuras vary from fixed historic installations to adjustable instruments, so possible actions must be established for the particular device.", "layers": [ { "id": "supported-adjustments", "name": "Supported adjustments", "description": "Identifies controls intended to alter scene selection or image formation.", "findings": [ { "id": "aiming-and-focus-controls", "name": "Aiming and focus controls", "description": "Records available controls, their travel limits and the evidence that they may be operated.", "questions": [ { "text": "Which mechanisms intentionally adjust aiming, aperture, lens position or receiving-surface position?", "kind": "definition", "id": "aiming-and-focus-controls-q01" }, { "text": "What instructions or inspection evidence establish their operating limits and any restrictions on use?", "kind": "provenance", "id": "aiming-and-focus-controls-q02" } ] } ] }, { "id": "optical-condition-and-care", "name": "Optical condition and care", "description": "Assesses defects and maintenance actions affecting the projection arrangement.", "findings": [ { "id": "condition-led-interventions", "name": "Condition-led interventions", "description": "Links observed contamination, damage or instability to supported care actions and operating restrictions.", "questions": [ { "text": "What contamination, damage, loose mounting or screen deformation is present, and what effect on projection has been observed?", "kind": "measurement", "id": "condition-led-interventions-q01" }, { "text": "Which cleaning, alignment or repair actions are supported by the component materials, installation instructions and conservation restrictions?", "kind": "action", "id": "condition-led-interventions-q02" }, { "text": "What device-specific restrictions apply to direct solar admission or access to concentrated light along the optical path?", "kind": "boundary", "id": "condition-led-interventions-q03" } ] } ] } ] } ] }, "openQuestions": [ "Where should the registry draw the boundary between a camera obscura and a pinhole photographic camera that can also project onto a viewing screen?", "Should temporary darkened rooms using an incidental opening qualify, and what evidence of image formation is sufficient for recognition?", "Which task-specific measures of visibility, detail and scene coverage are appropriate across room-sized and portable forms?", "What operating guidance is required for solar admission in each lens, mirror and receiving-surface configuration?", "Which historical or unusual optical arrangements require additional characteristics without creating separate models for variants?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 17 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "device, machine or tool", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a camera obscura, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an agent to recognise a camera obscura, assess its ability to form a viewable optical image, and determine appropriate viewing, adjustment and maintenance actions.", "characteristics": { "substance": "material", "origin": "manufactured", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Described in 65 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 camera obscura, 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": [], "standing": "Described in 65 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one camera obscura from another, and a camera obscura 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 camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura 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 camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura 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 camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura 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 camera obscura is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura 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 camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura 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 camera obscura between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a camera obscura 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 camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura 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 camera obscura 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 camera obscura, 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 camera obscura 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 camera obscura 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 camera obscura 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 camera obscura 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 camera obscura 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 camera obscura, 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 camera obscura 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 camera obscura and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a camera obscura, 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 camera obscura, 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 camera obscura 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 camera obscura is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a camera obscura, 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 camera obscura, 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 camera obscura 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 } } } }