{ "model": { "rank": 8164, "code": "thing-q692077", "model_id": "vr.tr.nevus", "name": "nevus", "purpose": "Let an agent give general, sourced information about moles and nevi, explain warning signs that should prompt a clinician visit, and avoid diagnosing individual skin lesions.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.STA", "industry": "", "version": "", "url": "/models/thing/q692077/", "tier": 2, "score": 52, "payload": { "layer": "wikidata", "aliases": [ "benign skin melanocytic nevus", "Becker's nevus", "Neurocutaneous melanosis", "dysplastic nevus", "conjunctival nevus", "intradermal nevus", "CLOVES syndrome", "birthmark", "melanocytic nevus", "epidermal nevus", "acral nevus", "Angora hair nevus", "congenital nevus of skin", "segmental outgrowth-lipomatosis-arteriovenous malformation-epidermal nevus syndrome", "congenital panfollicular nevus", "linear verrucous nevus syndrome", "PENS syndrome", "didymosis aplasticosebacea", "SCALP syndrome", "NEVADA syndrome", "palpebral nevus", "Mucinous nevus", "Nevus comedonicus", "porokeratotic eccrine ostial and dermal duct nevus", "Woolly hair nevus", "regressing nevus", "recurrent nevus", "Pigmented hairy epidermal nevus syndrome", "female genitalia nevus", "beauty spot", "café au lait spot", "Oral melanocytic nevi", "Nevus spilus", "Junctional nevus", "cockade nevus", "blue nevus", "nevus cell nevi", "congenital melanocytic nevus", "pigmented spindle cell nevus", "Pseudomelanoma" ], "aliasCount": 54, "merged": 54, "knownIn": 52, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q692077", "url": "https://www.wikidata.org/wiki/Q692077", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T12:12:49Z", "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": 1, "engine": "claude" }, "metaModel": { "id": "THING-Q692077", "registryId": "vr.tr.nevus", "name": "nevus", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.STA" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q692077/", "model": { "registry_id": "vr.tr.nevus", "name": "nevus", "purpose": "Let an agent give general, sourced information about moles and nevi, explain warning signs that should prompt a clinician visit, and avoid diagnosing individual skin lesions.", "definition": "A usually benign, localised growth or mark on the skin or mucosa, most commonly a melanocytic nevus (mole) formed by clusters of pigment cells; other kinds include congenital nevi, dysplastic nevi and some birthmarks.", "what_it_is_for": "A common skin feature relevant to dermatology and skin cancer prevention.", "affordances": [ "explain what moles are in general terms", "describe warning signs that need medical review", "find sun protection guidance", "find skin check services" ], "distinguishing_features": [ "Usually benign", "Very common", "Can change over life", "A small share of melanomas arise in existing moles" ], "appearance": "Brown, black, pink or skin-coloured spots, flat or raised, usually round and even.", "visual_identification": [ "Common moles are usually small and even in colour", "Changing moles need review", "Freckles and age spots are different" ], "physical_properties": [], "families_and_kinds": [ "common acquired melanocytic nevi", "congenital nevi", "dysplastic or atypical nevi", "blue and Spitz nevi", "non-melanocytic nevi and birthmarks" ], "related_models": [ { "relation": "is a kind of", "target": "skin benign neoplasm", "why": "category" }, { "relation": "is related to", "target": "melanoma", "why": "differential concern" }, { "relation": "is examined by", "target": "dermatologist", "why": "specialist" }, { "relation": "is protected by", "target": "sun protection", "why": "prevention" } ], "identifiers": [], "standards_and_regulation": [ "Clinical guidelines on suspected skin cancer referral", "Sunscreen labelling standards" ], "failure_modes_and_hazards": [ "Ignoring changing or bleeding moles", "Agents attempting to diagnose from descriptions or images", "Unregulated mole removal" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "warning", "name": "Warning", "description": "When to see a clinician.", "rationale": "Changes need review.", "layers": [ { "id": "signs", "name": "Signs", "description": "ABCDE.", "findings": [ { "id": "signs-finding", "name": "Signs", "description": "Warning signs.", "questions": [ { "text": "Does the mole show change in size, shape or colour, irregular borders, bleeding or itching?", "kind": "boundary" }, { "text": "Should the person book a prompt appointment with a doctor?", "kind": "action" } ] } ] }, { "id": "diagnosis", "name": "Diagnosis", "description": "No remote diagnosis.", "findings": [ { "id": "diagnosis-finding", "name": "Diagnosis", "description": "Diagnosis limits.", "questions": [ { "text": "Is the user asking the agent to say whether their mole is cancer?", "kind": "boundary" }, { "text": "How should the agent explain that only a clinician can assess it?", "kind": "action" } ] } ] } ] }, { "id": "information", "name": "Information", "description": "General facts.", "rationale": "Sourced information only.", "layers": [ { "id": "types", "name": "Types", "description": "Kinds of nevi.", "findings": [ { "id": "types-finding", "name": "Types", "description": "Nevus types.", "questions": [ { "text": "What types of nevi do dermatology sources describe?", "kind": "provenance" }, { "text": "Which are usually harmless?", "kind": "provenance" } ] } ] }, { "id": "children", "name": "Children", "description": "Birthmarks.", "findings": [ { "id": "children-finding", "name": "Children", "description": "Birthmarks.", "questions": [ { "text": "What do health services say about large birthmarks in children?", "kind": "provenance" }, { "text": "When should they be reviewed?", "kind": "provenance" } ] } ] } ] }, { "id": "prevention", "name": "Prevention", "description": "Sun safety.", "rationale": "Sun protection reduces risk.", "layers": [ { "id": "sun", "name": "Sun", "description": "Protection.", "findings": [ { "id": "sun-finding", "name": "Sun", "description": "Sun protection.", "questions": [ { "text": "What sun protection do health authorities recommend?", "kind": "provenance" }, { "text": "Does the UV index today call for extra care?", "kind": "provenance" } ] } ] }, { "id": "checks", "name": "Checks", "description": "Self-checks.", "findings": [ { "id": "checks-finding", "name": "Checks", "description": "Skin self-checks.", "questions": [ { "text": "How do health services suggest checking skin regularly?", "kind": "provenance" }, { "text": "Which services offer skin checks?", "kind": "provenance" } ] } ] } ] }, { "id": "removal", "name": "Removal", "description": "Treatment choices.", "rationale": "Removal belongs to clinicians.", "layers": [ { "id": "clinical", "name": "Clinical", "description": "Regulated care.", "findings": [ { "id": "clinical-finding", "name": "Clinical", "description": "Clinical removal.", "questions": [ { "text": "Who can lawfully remove moles here?", "kind": "provenance" }, { "text": "Is removed tissue sent for testing?", "kind": "provenance" } ] } ] }, { "id": "diy", "name": "DIY", "description": "Home removal risks.", "findings": [ { "id": "diy-finding", "name": "DIY", "description": "Home removal.", "questions": [ { "text": "Is the user considering removing a mole at home or with unregulated products?", "kind": "boundary" }, { "text": "How should the agent explain the risks and refer to a clinician?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should nevus types be separate entries?", "How should skin check services be localised?", "How should rare syndromes be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "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 nevus, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent give general, sourced information about moles and nevi, explain warning signs that should prompt a clinician visit, and avoid diagnosing individual skin lesions.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: benign skin melanocytic nevus, Becker's nevus, Neurocutaneous melanosis, dysplastic nevus, conjunctival nevus, intradermal nevus, CLOVES syndrome, birthmark, melanocytic nevus, epidermal nevus, acral nevus, Angora hair nevus.", "54 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 52 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 nevus, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "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": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "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": [ "benign skin melanocytic nevus", "Becker's nevus", "Neurocutaneous melanosis", "dysplastic nevus", "conjunctival nevus", "intradermal nevus", "CLOVES syndrome", "birthmark", "melanocytic nevus", "epidermal nevus", "acral nevus", "Angora hair nevus" ] } ], "standing": "Described in 52 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 54 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 nevus from another, and a nevus 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 nevus, 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 nevus, 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 nevus 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 nevus, 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 nevus, 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 nevus 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 nevus 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 nevus, 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 nevus, 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 nevus 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 nevus from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a nevus, 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 nevus, 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 nevus 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 nevus 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 nevus between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a nevus, 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 nevus, 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 nevus 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 nevus, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a nevus 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 nevus, 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 nevus, 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 nevus is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What nevus is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of nevus are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is nevus operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of nevus and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of nevus?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as nevus?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a nevus 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 nevus and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a nevus, 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 nevus, 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 nevus 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 nevus is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a nevus, 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 nevus, 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 nevus is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }