{ "model": { "rank": 5104, "code": "thing-q179430", "model_id": "vr.tr.sextant", "name": "sextant", "purpose": "Enable an agent to recognise a sextant, assess its angular measurement capability and condition, and determine whether and how it can support a reliable observation.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.OBJ", "industry": "", "version": "", "url": "/models/thing/q179430/", "tier": 2, "score": 70, "payload": { "layer": "wikidata", "aliases": [], "aliasCount": 0, "merged": 0, "knownIn": 70, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.sextant-artifact", "source": { "dataset": "wikidata", "item": "Q179430", "url": "https://www.wikidata.org/wiki/Q179430", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-09T21:40:41Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 17.7, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0881c-ae45-7153-a420-cca4f22832ce\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: sextant\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 005: 1001 registe", "usd": 0, "recall": true }, "codex": { "seconds": 65.8, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0881c-ae4d-7e31-ab79-bb2a4fbba948\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: sextant\nRegistry id: vr.tr.sextant\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext " } } }, "metaModel": { "id": "THING-Q179430", "registryId": "vr.tr.sextant", "name": "sextant", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q179430/", "model": { "registry_id": "vr.tr.sextant", "name": "sextant", "purpose": "Enable an agent to recognise a sextant, assess its angular measurement capability and condition, and determine whether and how it can support a reliable observation.", "definition": "A sextant is a graduated double-reflection instrument that measures the angle between two visible directions, especially the altitude of a celestial body above a horizon for celestial navigation.", "scope_statement": "This model owns the sextant as a kind of angle-measuring instrument, centred on the reflecting navigational sextant, including its optical geometry, readout, adjustments, observation interfaces and serviceability; product specifications and individual instrument records supply evidence against this model.", "in_scope": [ "Reflecting geometry used to bring two directions into apparent coincidence", "Frame, graduated arc, index arm, mirrors, telescope and angular readout", "Instrument errors, adjustment history and measurement uncertainty", "Interfaces for natural-horizon, artificial-horizon and other angular observations", "Optical protection, handling, maintenance and readiness for use" ], "out_of_scope": [ "Complete celestial navigation procedures and position-fixing calculations", "Ephemerides, nautical almanacs and astronomical object catalogues", "Chronometers and independent timekeeping systems", "Vessel motion, voyage planning and bridge navigation systems", "Standalone artificial horizons and their internal operation", "Historical astronomical instruments called sextants that do not use the reflecting operating principle" ], "distinguishing_features": [ "A reflecting sextant combines a direct view with a view reflected by an index mirror and horizon mirror so the observer can bring two targets into coincidence.", "Its indicated angle follows double-reflection geometry: rotation of the index mirror changes the measured angle by twice that rotation.", "The characteristic arc is approximately one sixth of a circle, with a scale representing approximately twice the physical arc angle; actual measuring limits must be recorded separately.", "Unlike an octant or reflecting quadrant, its nominal physical arc is about 60 degrees rather than 45 or 90 degrees.", "Unlike a theodolite, it ordinarily measures separation through optical coincidence rather than through separate telescope pointings around mounted axes." ], "characteristics": [ { "name": "Sextant sense and variant", "kind": "category", "unit_or_values": "marine reflecting; bubble-equipped; other documented reflecting variant; unresolved", "why_it_matters": "Establishes whether the instrument belongs within this model and which observation interfaces apply." }, { "name": "Angular measuring range", "kind": "measurement", "unit_or_values": "degrees, with minimum and maximum indicated angles", "why_it_matters": "Determines whether a proposed angular separation can be measured." }, { "name": "Readout arrangement", "kind": "category", "unit_or_values": "vernier; micrometer drum; electronic; other documented arrangement", "why_it_matters": "Determines how an observation is read and which readout errors require checking." }, { "name": "Smallest readable increment", "kind": "measurement", "unit_or_values": "arcminutes or arcseconds", "why_it_matters": "Describes readout resolution without treating it as demonstrated accuracy." }, { "name": "Index error", "kind": "measurement", "unit_or_values": "arcminutes, with explicit sign convention, test method and observation date", "why_it_matters": "Supports the corresponding correction and reveals changes in zero alignment." }, { "name": "Calibration evidence", "kind": "relation", "unit_or_values": "linked certificate, correction table or documented comparison", "why_it_matters": "Connects accuracy claims and angular corrections to evidence for the relevant instrument." }, { "name": "Horizon mirror configuration", "kind": "category", "unit_or_values": "split field; whole horizon; other documented configuration", "why_it_matters": "Affects target acquisition and the visibility of the two images." }, { "name": "Viewing optics", "kind": "measurement", "unit_or_values": "magnification in ×; objective aperture in mm; field of view in degrees", "why_it_matters": "Helps judge suitability for target brightness, acquisition and image alignment." }, { "name": "Horizon reference", "kind": "category", "unit_or_values": "natural horizon; external artificial horizon; integrated bubble reference; no horizon required for the selected observation", "why_it_matters": "Determines what the measured angle represents and which observation corrections may apply." }, { "name": "Optical and mechanical readiness", "kind": "state", "unit_or_values": "unchecked; serviceable for specified use; restricted; requires adjustment; requires repair", "why_it_matters": "Prevents an apparently readable instrument from being assumed fit for observation." }, { "name": "Solar observation protection", "kind": "state", "unit_or_values": "absent; unverified; damaged; documented suitable protection installed", "why_it_matters": "Solar viewing requires suitable protection supported by evidence rather than inferred from apparent darkness." }, { "name": "Power dependency", "kind": "category", "unit_or_values": "none for angular measurement; illumination supply; electronic readout supply; other documented dependency", "why_it_matters": "Separates passive optical operation from optional functions that depend on power." } ], "affordances": [ "Determine whether a target pair and angular separation fall within the instrument's usable range.", "Bring direct and reflected images into coincidence and record the indicated angle.", "Check index error and attach applicable instrument corrections to an observation.", "Assess compatibility with a telescope, horizon reference or observation accessory.", "Restrict observation when optical protection, alignment or mechanical condition is inadequate.", "Select documented cleaning, adjustment or servicing actions and require appropriate checks afterward." ] }, "sources": [], "structure": { "bundles": [ { "id": "identity-and-measuring-envelope", "name": "Identity and measuring envelope", "description": "Establishes which sense of sextant is represented and which angular tasks it supports.", "rationale": "The name alone does not establish reflecting geometry, variant or usable angular range.", "layers": [ { "id": "instrument-boundary", "name": "Instrument boundary", "description": "Separates reflecting sextants from related instruments and historical namesakes.", "findings": [ { "id": "reflecting-sextant-identity", "name": "Reflecting sextant identity", "description": "Recognition depends on the optical arrangement and arc geometry, with uncertain namesakes held for scope review.", "questions": [ { "text": "Does the instrument combine direct and doubly reflected sight lines through a movable index mirror?", "kind": "definition", "id": "reflecting-sextant-identity-q01" }, { "text": "What evidence distinguishes it from an octant, reflecting quadrant or non-reflecting astronomical sextant?", "kind": "boundary", "id": "reflecting-sextant-identity-q02" } ] } ] }, { "id": "angular-capability", "name": "Angular capability", "description": "Records the usable angular envelope independently of the nominal arc name.", "findings": [ { "id": "range-and-readability", "name": "Range and readability", "description": "Scale limits and readable increments constrain observations but do not establish accuracy.", "questions": [ { "text": "What are the minimum and maximum readable angles, including any extension beyond zero or the nominal range?", "kind": "measurement", "id": "range-and-readability-q01" }, { "text": "What increment can be read using the installed vernier, micrometer or electronic readout?", "kind": "measurement", "id": "range-and-readability-q02" } ] } ] } ] }, { "id": "optical-coincidence-and-controls", "name": "Optical coincidence and controls", "description": "Describes how the instrument forms, aligns and reads two target images.", "rationale": "A sextant's usefulness depends on image coincidence and index-arm control working together.", "layers": [ { "id": "image-paths", "name": "Image paths", "description": "Identifies the mirrors and viewing optics used to combine the target directions.", "findings": [ { "id": "direct-and-reflected-visibility", "name": "Direct and reflected visibility", "description": "Mirror configuration and telescope properties affect whether both targets can be acquired and aligned.", "questions": [ { "text": "Which horizon mirror configuration is fitted, and how are the direct and reflected fields presented?", "kind": "definition", "id": "direct-and-reflected-visibility-q01" }, { "text": "What telescope magnification, aperture and field of view are documented for the installed optics?", "kind": "measurement", "id": "direct-and-reflected-visibility-q02" } ] } ] }, { "id": "index-arm-operation", "name": "Index arm operation", "description": "Connects coarse movement, fine adjustment and readout to the measured angle.", "findings": [ { "id": "movement-and-reading-integrity", "name": "Movement and reading integrity", "description": "The arm, clamp and fine adjustment must support repeatable image coincidence and an unambiguous reading.", "questions": [ { "text": "How are coarse movement, clamping and fine adjustment performed on this sextant design?", "kind": "action", "id": "movement-and-reading-integrity-q01" }, { "text": "Does approaching the same angle from opposite directions reveal backlash, sticking or a change in the indicated reading?", "kind": "measurement", "id": "movement-and-reading-integrity-q02" } ] } ] } ] }, { "id": "instrument-errors-and-evidence", "name": "Instrument errors and evidence", "description": "Separates alignment checks, instrument corrections and demonstrated measurement quality.", "rationale": "Optical coincidence can produce a plausible reading even when instrument errors remain.", "layers": [ { "id": "alignment-and-zero", "name": "Alignment and zero", "description": "Covers index error and alignment of mirrors and the viewing axis.", "findings": [ { "id": "alignment-check-record", "name": "Alignment check record", "description": "A useful check records the method, conditions and result rather than merely labelling the instrument adjusted.", "questions": [ { "text": "What index error was measured, by which method and under which sign convention?", "kind": "measurement", "id": "alignment-check-record-q01" }, { "text": "Which documented checks address index-mirror perpendicularity, horizon-mirror side error and telescope collimation where applicable?", "kind": "action", "id": "alignment-check-record-q02" } ] } ] }, { "id": "accuracy-and-corrections", "name": "Accuracy and corrections", "description": "Links accuracy claims and angle-dependent corrections to their evidential limits.", "findings": [ { "id": "supported-angular-performance", "name": "Supported angular performance", "description": "Resolution, repeatability and accuracy require distinct records; correction evidence must match the instrument and its condition.", "questions": [ { "text": "Which calibration or comparison supports the claimed accuracy across the usable arc?", "kind": "provenance", "id": "supported-angular-performance-q01" }, { "text": "What uncertainty remains after applicable instrument corrections, and which effects were excluded from that assessment?", "kind": "measurement", "id": "supported-angular-performance-q02" } ] } ] } ] }, { "id": "observation-reference-and-record", "name": "Observation reference and record", "description": "Makes each angular observation interpretable through its targets, reference and correction status.", "rationale": "The same sextant reading can represent different quantities depending on the horizon arrangement and selected target contact.", "layers": [ { "id": "target-and-horizon-reference", "name": "Target and horizon reference", "description": "Identifies the two observed directions and how a horizon reference is supplied.", "findings": [ { "id": "observation-geometry", "name": "Observation geometry", "description": "Natural-horizon, reflected artificial-horizon, bubble-reference and target-to-target observations require explicit distinctions.", "questions": [ { "text": "Which two directions are brought into coincidence, including the selected limb or centre of an extended target?", "kind": "definition", "id": "observation-geometry-q01" }, { "text": "Does the horizon arrangement produce an altitude reading, a doubled altitude angle or another angular separation?", "kind": "boundary", "id": "observation-geometry-q02" } ] } ] }, { "id": "reading-to-observation-handoff", "name": "Reading to observation handoff", "description": "Separates the instrument reading from subsequent navigation or surveying reductions.", "findings": [ { "id": "interpretable-observation-record", "name": "Interpretable observation record", "description": "The raw reading and correction status remain available alongside the contextual records needed by the consuming task.", "questions": [ { "text": "Are the raw reading, applied index correction and any other instrument corrections recorded separately?", "kind": "measurement", "id": "interpretable-observation-record-q01" }, { "text": "Which linked records must supply observation time, eye height, atmospheric conditions or other inputs required by the intended reduction?", "kind": "boundary", "id": "interpretable-observation-record-q02" } ] } ] } ] }, { "id": "protection-and-serviceability", "name": "Protection and serviceability", "description": "Assesses solar-viewing protection and the condition of sensitive optical and mechanical parts.", "rationale": "Damaged shades can endanger the observer, while shock, corrosion and optical deterioration can invalidate measurements.", "layers": [ { "id": "solar-viewing-protection", "name": "Solar viewing protection", "description": "Requires evidence that the installed protection is suitable for the actual solar observation configuration.", "findings": [ { "id": "verified-solar-configuration", "name": "Verified solar configuration", "description": "Shade presence or apparent darkness alone does not establish suitability for direct solar observation.", "questions": [ { "text": "What manufacturer documentation or applicable test evidence establishes the suitability of the installed solar shades?", "kind": "provenance", "id": "verified-solar-configuration-q01" }, { "text": "What observation restriction applies if a required shade is missing, damaged, loose or unverified?", "kind": "action", "id": "verified-solar-configuration-q02" } ] } ] }, { "id": "handling-and-restoration", "name": "Handling and restoration", "description": "Connects condition findings and handling events to maintenance and renewed measurement checks.", "findings": [ { "id": "return-to-observation-readiness", "name": "Return to observation readiness", "description": "Service decisions consider mirror coatings, shade mounts, frame integrity, index movement and any powered accessories.", "questions": [ { "text": "What evidence of impact, frame distortion, corrosion, coating damage or impaired index movement limits use?", "kind": "measurement", "id": "return-to-observation-readiness-q01" }, { "text": "Which documented cleaning, repair or adjustment actions are appropriate, and which alignment or calibration checks must follow?", "kind": "action", "id": "return-to-observation-readiness-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This describes the instrument class, not a particular manufacturer's model or individual unit.", "Listed kinds overlap: a bubble sextant is an artificial-horizon implementation.", "Measuring range, resolution and accuracy depend on the model; graduation size is not a guarantee of measurement accuracy. No specific governing standard is asserted from recall." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of sextant this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-kinds", "name": "Kinds and varieties", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Marine sextant", "Bubble sextant", "Artificial-horizon sextant" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of sextant this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Measuring solar or stellar altitude for celestial navigation when combined with observation time, almanac data and sight reduction.", "Providing a navigation method independent of satellite positioning.", "Measuring horizontal angles between landmarks for coastal position fixing.", "Teaching celestial navigation and practical angular measurement." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of sextant this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Physical extent of the nominal graduated arc", "typical_range": "Approximately 60", "unit": "degree" }, { "quantity": "Nominal angular measuring span through double reflection", "typical_range": "Approximately 120", "unit": "degree" }, { "quantity": "Micrometer drum graduation on many marine sextants", "typical_range": "1", "unit": "arcminute" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of sextant this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Index error and mirror misalignment introduce systematic angular errors.", "Frame distortion, impact damage or wear can impair calibration and repeatability.", "Corrosion, dirty optics or damaged mirror coatings reduce image quality.", "Direct solar observation without appropriate intact sextant shades can cause permanent eye injury.", "Horizon misidentification, vessel motion and incorrect observation time or altitude corrections can produce substantial position errors." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of sextant this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "Octant", "difference": "Uses a nominal 45-degree arc to measure angles through approximately 90 degrees; a sextant uses a nominal 60-degree arc for approximately 120 degrees." }, { "name": "Theodolite", "difference": "Measures horizontal and vertical angles using a mounted telescope and graduated circles rather than bringing two images into coincidence through double reflection." }, { "name": "Sextant observation", "difference": "An observation is a measurement event and its recorded result; the sextant is the physical instrument." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of sextant this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does the registry intend sextant to include historical non-reflecting astronomical instruments, or only the reflecting navigational family?", "Which issuing bodies and current standards, if any, govern sextant performance, calibration and solar-shade suitability for the intended applications?", "What sourced ranges for dimensions, mass, angular coverage and accuracy are representative of marine, training and bubble-equipped variants?", "Which adjustment procedures are appropriate for users, and which require specialist service for each design?", "Does an existing Vercy world model already cover this concept and require the registry entry to link to it instead of receiving a separate publication?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 16, "questions": 26 } }, "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 sextant, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an agent to recognise a sextant, assess its angular measurement capability and condition, and determine whether and how it can support a reliable observation.", "characteristics": { "substance": "material", "origin": "manufactured", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Described in 70 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 sextant, 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 70 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 sextant from another, and a sextant 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 sextant, 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 sextant, 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 sextant 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 sextant, 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 sextant, 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 sextant 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 sextant 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 sextant, 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 sextant, 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 sextant 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 sextant from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a sextant, 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 sextant, 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 sextant 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 sextant 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 sextant, 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 sextant, 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 sextant 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 sextant is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a sextant, 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 sextant, 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 sextant 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 sextant is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a sextant, 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 sextant, 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 sextant 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 sextant 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 sextant is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a sextant, 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 sextant, 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 sextant 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 sextant 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 sextant, 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 sextant, 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 sextant 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 sextant 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 sextant between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a sextant, 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 sextant, 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 sextant 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 sextant, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a sextant 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 sextant, 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 sextant, 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 sextant 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 sextant 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 sextant 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 sextant, 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 sextant 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 sextant 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 sextant 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 sextant 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 sextant 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 sextant, 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 sextant 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 sextant and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a sextant, 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 sextant, 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 sextant 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 sextant is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a sextant, 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 sextant, 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 sextant 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 } } } }