{ "model": { "rank": 4579, "code": "thing-q180537", "model_id": "vr.tr.meander", "name": "meander", "purpose": "Let an agent explain meanders and how they form, relay geomorphology, measurement and examples from river science sources, describe cut-offs and oxbow lakes, and distinguish meanders from braided channels, from the decorative meander pattern and from the meander in other senses.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.PLC", "industry": "", "version": "", "url": "/models/thing/q180537/", "tier": 2, "score": 74, "payload": { "layer": "wikidata", "aliases": [ "river bend" ], "aliasCount": 1, "merged": 1, "knownIn": 74, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q180537", "url": "https://www.wikidata.org/wiki/Q180537", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-13T15:18:08Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 4, "engine": "claude" }, "metaModel": { "id": "THING-Q180537", "registryId": "vr.tr.meander", "name": "meander", "version": "0.2.0-wave.4", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.PLC" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q180537/", "model": { "registry_id": "vr.tr.meander", "name": "meander", "purpose": "Let an agent explain meanders and how they form, relay geomorphology, measurement and examples from river science sources, describe cut-offs and oxbow lakes, and distinguish meanders from braided channels, from the decorative meander pattern and from the meander in other senses.", "definition": "A pronounced bend in a river or stream, formed as flowing water erodes the outer bank and deposits sediment on the inner bank, so that the channel migrates across its floodplain in a series of loops, sometimes cut off to leave oxbow lakes; the term comes from the winding Maeander river in Anatolia, and the registry treats the meander as a water area, the river bend itself.", "what_it_is_for": "Not applicable; a river feature.", "affordances": [ "explain formation", "relay geomorphology", "describe related features", "distinguish related concepts" ], "distinguishing_features": [ "Outer bank erosion", "Inner bank deposition", "Lateral migration", "Cut-offs and oxbows" ], "appearance": "A looping bend of a river seen from above.", "visual_identification": [ "Pronounced river bend", "River bend, meander loop, oxbow lake after cut-off", "Braided channels split around bars; the decorative meander is a key pattern; other senses are figurative" ], "physical_properties": [ { "quantity": "meander wavelength", "typical_range": "about 10-14 times channel width", "unit": "note", "note": "empirical" }, { "quantity": "sinuosity threshold", "typical_range": "above about 1.5", "unit": "note", "note": "for meandering" }, { "quantity": "name origin", "typical_range": "Maeander river, Anatolia", "unit": "note", "note": "" } ], "families_and_kinds": [ "free meanders on floodplains", "incised meanders in bedrock", "tidal meanders", "meanders of small streams", "abandoned meanders and oxbow lakes" ], "related_models": [ { "relation": "is a kind of", "target": "water area", "why": "in registry terms" }, { "relation": "forms", "target": "oxbow lake", "why": "when cut off" }, { "relation": "is contrasted with", "target": "braided river", "why": "a different channel pattern" }, { "relation": "is named after", "target": "Buyuk Menderes River", "why": "the ancient Maeander" } ], "identifiers": [], "standards_and_regulation": [ "River management and flood risk regulations", "Restoration guidance for re-meandering" ], "failure_modes_and_hazards": [ "Bank erosion threatening property", "Confusing the river feature with the decorative pattern", "Channelisation removing meanders" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What a meander is.", "rationale": "Science.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is a meander, and how does it differ from a braided channel, the decorative pattern and figurative senses?", "kind": "definition" }, { "text": "Is the question about geomorphology, a specific river, management or another sense?", "kind": "boundary" } ] } ] }, { "id": "features", "name": "Features", "description": "Related features.", "findings": [ { "id": "features-finding", "name": "Features", "description": "Features.", "questions": [ { "text": "What are point bars, cut banks, cut-offs and oxbow lakes?", "kind": "definition" }, { "text": "Which entry fits the specific feature?", "kind": "action" } ] } ] } ] }, { "id": "science", "name": "Science", "description": "Geomorphology.", "rationale": "Science.", "layers": [ { "id": "formation", "name": "Formation", "description": "Formation.", "findings": [ { "id": "formation-finding", "name": "Formation", "description": "Formation.", "questions": [ { "text": "How do helical flow, erosion and deposition form and migrate meanders?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "measurement", "name": "Measurement", "description": "Measurement.", "findings": [ { "id": "measurement-finding", "name": "Measurement", "description": "Measurement.", "questions": [ { "text": "How are sinuosity, wavelength and migration rates measured?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] } ] }, { "id": "management", "name": "Management", "description": "Management.", "rationale": "Application.", "layers": [ { "id": "risks", "name": "Risks", "description": "Risks.", "findings": [ { "id": "risks-finding", "name": "Risks", "description": "Risks.", "questions": [ { "text": "How do meanders affect flooding, navigation and property?", "kind": "provenance" }, { "text": "Which entry fits river engineering?", "kind": "action" } ] } ] }, { "id": "restoration", "name": "Restoration", "description": "Restoration.", "findings": [ { "id": "restoration-finding", "name": "Restoration", "description": "Restoration.", "questions": [ { "text": "Why and how are straightened rivers re-meandered?", "kind": "provenance" }, { "text": "Which entry fits river restoration?", "kind": "action" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Examples and culture.", "rationale": "Context.", "layers": [ { "id": "examples", "name": "Examples", "description": "Examples.", "findings": [ { "id": "examples-finding", "name": "Examples", "description": "Examples.", "questions": [ { "text": "What are famous meanders, such as those of the Mississippi and the Buyuk Menderes?", "kind": "provenance" }, { "text": "Which entry fits the specific river?", "kind": "action" } ] } ] }, { "id": "culture", "name": "Culture", "description": "Culture.", "findings": [ { "id": "culture-finding", "name": "Culture", "description": "Culture.", "questions": [ { "text": "How did the Maeander give its name to the word and the decorative pattern?", "kind": "provenance" }, { "text": "Which entry fits meander (art)?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should oxbow lake and incised meander be separate primary entries?", "How should river science sources be linked?", "How should the registry separate the decorative pattern sense?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "place or geographic feature", "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 meander, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain meanders and how they form, relay geomorphology, measurement and examples from river science sources, describe cut-offs and oxbow lakes, and distinguish meanders from braided channels, from the decorative meander pattern and from the meander in other senses.", "characteristics": { "substance": "place", "origin": "natural", "agency": "inert", "mobility": "fixed", "scale": "geographic" }, "whatYouCanDoWithIt": [ "observed and measured", "entered, crossed or travelled along" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: river bend.", "1 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 74 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 meander, and on what evidence are they told apart?" ], "whatItIsMadeOf": "a portion of the world with an extent", "physicalCharacter": [ "On the scale of a landscape, measured in kilometres.", "Stays where it was put; moving it is a project.", "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state", "enter it, cross it, travel along it" ], "howItIsRecognised": [ "Recognised by extent on the ground and by position, not by appearance. Two places that look alike are told apart by where they are." ], "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": [ "river bend" ] } ], "standing": "Described in 74 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 1 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 meander from another, and a meander 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 meander, 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 meander, 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 meander 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 meander, 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 meander, 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 meander 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 meander 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 meander, 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 meander, 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 meander 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 meander from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a meander, 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 meander, 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 meander 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 meander is made of, what shape and size it takes, and what state it is in.", "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.", "layers": [ { "id": "form-and-dimensions", "name": "Form and dimensions", "description": "Shape, size, mass and the ranges these take across examples at geographic scale.", "findings": [ { "id": "measurable-dimensions", "name": "Measurable dimensions and their units", "description": "The quantities worth recording and the units they are recorded in.", "questions": [ { "id": "measurable-dimensions-q01", "text": "What identifies and describes the dimensions of a meander, 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 meander, 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 meander 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 meander is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a meander, 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 meander, 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 meander 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 meander is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a meander, 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 meander, 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 meander 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 meander is, how it got there and where it may go (fixed).", "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.", "layers": [ { "id": "location-and-placement", "name": "Location and placement", "description": "Position, containment and the reference frame the position is given in.", "findings": [ { "id": "position-and-frame", "name": "Position, container and reference frame", "description": "Where a meander is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a meander, 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 meander, 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 meander 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 meander 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 meander, 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 meander, 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 meander 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 meander 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 meander between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a meander, 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 meander, 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 meander 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 meander, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a meander 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 meander, 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 meander, 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 meander is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "use-and-operation", "name": "Use and operation", "description": "What can be done with a meander and what it takes to do it.", "rationale": "An agent that can recognise a thing but not act on it has only half a model.", "layers": [ { "id": "intended-use", "name": "Intended use and function", "description": "What a meander is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a meander performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a meander, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "function-and-purpose-q02", "text": "Who or what asserted this about the use of a meander, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "function-and-purpose-q03", "text": "What may an agent decide or do once the use of a meander is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "handling-and-procedure", "name": "Handling and procedure", "description": "The steps, skills and tools involved in using a meander.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a meander at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a meander, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "procedures-and-skills-q02", "text": "Who or what asserted this about handling a meander, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "procedures-and-skills-q03", "text": "What may an agent decide or do once handling a meander is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "extent-and-geometry", "name": "Extent, geometry and naming", "description": "Where meander is, how far it reaches, and what it is called.", "rationale": "A boundary is claimed by an authority rather than observed in the world, so the claimant belongs in the record with the geometry.", "layers": [ { "id": "geometry", "name": "Geometry and reference system", "description": "Coordinates, extent and the frame they are given in.", "findings": [ { "id": "geometry-record", "name": "Geometry, precision and frame", "description": "What is recorded about position and shape, and to what accuracy.", "questions": [ { "id": "geometry-record-q01", "text": "What geometry describes meander, in which coordinate reference system, at what precision?", "kind": "measurement" }, { "id": "geometry-record-q02", "text": "Which authority publishes that geometry, and who publishes a different one?", "kind": "provenance" } ] } ] }, { "id": "names", "name": "Names and endonyms", "description": "What it is called in different languages and by different parties.", "findings": [ { "id": "naming-record", "name": "Names and who uses them", "description": "Official names, local names and contested names.", "questions": [ { "id": "naming-record-q01", "text": "By what names is meander known, in which languages, and which are official to whom?", "kind": "definition" }, { "id": "naming-record-q02", "text": "Where naming is contested, what should an agent record instead of choosing?", "kind": "action" } ] } ] } ] }, { "id": "containment-and-access", "name": "Containment, jurisdiction and access", "description": "What meander sits inside, who governs it, and who may enter.", "rationale": "Administrative containment decides which rules apply, and it changes without the place moving.", "layers": [ { "id": "containment", "name": "Administrative containment", "description": "The units it belongs to and the date each holds from.", "findings": [ { "id": "containment-record", "name": "Containing units and effective dates", "description": "Where it sits administratively and since when.", "questions": [ { "id": "containment-record-q01", "text": "Which administrative units contain meander, and since when does each containment hold?", "kind": "definition" }, { "id": "containment-record-q02", "text": "Which containment is disputed, and by which parties?", "kind": "boundary" } ] } ] }, { "id": "access", "name": "Access and permitted use", "description": "Who may enter or use it and under what conditions.", "findings": [ { "id": "access-rules", "name": "Access rules and their source", "description": "Entry, use and restriction, with the rule behind each.", "questions": [ { "id": "access-rules-q01", "text": "Who may enter or use meander, under what conditions, and by whose rule?", "kind": "action" }, { "id": "access-rules-q02", "text": "What seasonal or conditional closure applies, and how is it announced?", "kind": "definition" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a meander 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 meander and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a meander, 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 meander, 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 meander 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 meander is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a meander, 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 meander, 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 meander is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 8, "layers": 17, "findings": 19, "questions": 53 } } } }