{ "model": { "rank": 2499, "code": "thing-q38848", "model_id": "vr.tr.heavy-metal-music", "name": "heavy metal music", "purpose": "Let an agent explain heavy metal music and its subgenres, relay history, sound and regional scenes from music history sources with attribution, describe culture and controversies neutrally, and distinguish heavy metal from hard rock and from the chemical sense of heavy metal.", "family": "Thing Registry", "category": "Information and virtual systems", "status": "research-draft", "kind": "thing", "plane": "INF", "domain": "INF.MED", "industry": "", "version": "", "url": "/models/thing/q38848/", "tier": 2, "score": 104, "payload": { "layer": "wikidata", "aliases": [ "African heavy metal", "Argentine heavy metal", "Buddhist metal", "stoner rock", "French heavy metal", "country metal", "Christian metal", "Canadian heavy metal", "Bangladeshi heavy metal", "new wave of British heavy metal", "new wave of American heavy metal", "US power metal", "traditional heavy metal", "heavy yoik", "melodic heavy metal", "epic heavy metal", "speed metal", "true metal", "downer metal", "epic metal", "Chinese heavy metal", "dream metal", "Palm Desert Scene", "New wave of traditional heavy metal", "melodic speed metal" ], "aliasCount": 25, "merged": 25, "knownIn": 104, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q38848", "url": "https://www.wikidata.org/wiki/Q38848", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-13T04:49:08Z", "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": 3, "engine": "claude" }, "metaModel": { "id": "THING-Q38848", "registryId": "vr.tr.heavy-metal-music", "name": "heavy metal music", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "INF.MED" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q38848/", "model": { "registry_id": "vr.tr.heavy-metal-music", "name": "heavy metal music", "purpose": "Let an agent explain heavy metal music and its subgenres, relay history, sound and regional scenes from music history sources with attribution, describe culture and controversies neutrally, and distinguish heavy metal from hard rock and from the chemical sense of heavy metal.", "definition": "A genre of rock music that developed in the late 1960s and early 1970s in the United Kingdom and the United States, characterised by distorted guitars, emphatic rhythms, dense bass and drum sound, powerful vocals and often loudness and virtuosity, pioneered by Black Sabbath, Deep Purple and Led Zeppelin and diversified into subgenres such as thrash, death, black, doom, power and stoner metal and regional scenes from Argentina and France to Africa, with crossovers such as country metal and religiously themed variants; heavy metal has a global fan culture and a history of controversy.", "what_it_is_for": "Not applicable; a music genre.", "affordances": [ "explain sound and subgenres", "relay history and scenes", "describe culture neutrally", "distinguish from hard rock and metals" ], "distinguishing_features": [ "Distortion and volume", "Riff-based", "Many subgenres", "Global scenes" ], "appearance": "Not a visible object; loud distorted guitar music and its imagery.", "visual_identification": [ "Rock genre with distorted guitars and heavy sound", "Thrash, death, black, doom, power, stoner metal; Argentine, French, African scenes; country and Buddhist metal", "Hard rock is a close relative; heavy metals in chemistry are elements" ], "physical_properties": [ { "quantity": "origin", "typical_range": "late 1960s", "unit": "period", "note": "UK and US" }, { "quantity": "first Black Sabbath album", "typical_range": "1970", "unit": "year", "note": "" } ], "families_and_kinds": [ "traditional heavy metal and NWOBHM", "thrash, death and black metal", "doom and stoner metal", "power, progressive and symphonic metal", "regional scenes such as Argentine, French and African heavy metal", "crossovers such as country metal and religiously themed metal including Christian and Buddhist metal" ], "related_models": [ { "relation": "is a kind of", "target": "metal music", "why": "in registry terms" }, { "relation": "developed from", "target": "hard rock", "why": "and blues rock" }, { "relation": "was pioneered by", "target": "Black Sabbath", "why": "among others" }, { "relation": "is contrasted with", "target": "heavy metals", "why": "in chemistry" } ], "identifiers": [], "standards_and_regulation": [ "No regulation of the genre", "Historical censorship and parental advisory labelling", "Noise and hearing protection rules at concerts" ], "failure_modes_and_hazards": [ "Confusing subgenres", "Presenting moral panics as fact", "Hearing damage at loud concerts" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What heavy metal is.", "rationale": "Definition.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition and sound.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What defines heavy metal musically, and how does it differ from hard rock?", "kind": "definition" }, { "text": "Is the question about the genre, a subgenre, a band or heavy metals in chemistry?", "kind": "boundary" } ] } ] }, { "id": "subgenres", "name": "Subgenres", "description": "Subgenres.", "findings": [ { "id": "subgenres-finding", "name": "Subgenres", "description": "Subgenres.", "questions": [ { "text": "How do thrash, death, black, doom, power and stoner metal differ?", "kind": "definition" }, { "text": "Which entry fits the specific subgenre?", "kind": "action" } ] } ] } ] }, { "id": "history", "name": "History", "description": "History.", "rationale": "Attribution.", "layers": [ { "id": "origins", "name": "Origins", "description": "Origins.", "findings": [ { "id": "origins-finding", "name": "Origins", "description": "Origins.", "questions": [ { "text": "How did heavy metal emerge from blues rock and psychedelia, and who were its pioneers, as music historians describe?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "scenes", "name": "Scenes", "description": "Regional scenes.", "findings": [ { "id": "scenes-finding", "name": "Scenes", "description": "Scenes.", "questions": [ { "text": "How did scenes develop in Argentina, France, Africa, Scandinavia and elsewhere?", "kind": "provenance" }, { "text": "Which entry fits the specific scene?", "kind": "action" } ] } ] } ] }, { "id": "culture", "name": "Culture", "description": "Culture.", "rationale": "Attribution.", "layers": [ { "id": "fans", "name": "Fans", "description": "Fan culture.", "findings": [ { "id": "fans-finding", "name": "Fans", "description": "Fans.", "questions": [ { "text": "What are the fan culture, festivals and imagery of heavy metal?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] }, { "id": "controversy", "name": "Controversy", "description": "Controversies.", "findings": [ { "id": "controversy-finding", "name": "Controversy", "description": "Controversy.", "questions": [ { "text": "What controversies and moral panics have surrounded heavy metal, with positions attributed?", "kind": "provenance" }, { "text": "Is the presentation neutral?", "kind": "boundary" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Crossovers and study.", "rationale": "Context.", "layers": [ { "id": "crossovers", "name": "Crossovers", "description": "Crossovers.", "findings": [ { "id": "crossovers-finding", "name": "Crossovers", "description": "Crossovers.", "questions": [ { "text": "What are country metal, Christian and Buddhist metal and other crossovers?", "kind": "provenance" }, { "text": "Which entry fits the specific crossover?", "kind": "action" } ] } ] }, { "id": "study", "name": "Study", "description": "Metal studies.", "findings": [ { "id": "study-finding", "name": "Study", "description": "Study.", "questions": [ { "text": "How is heavy metal studied academically?", "kind": "provenance" }, { "text": "Which entry fits musicology?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should major subgenres be separate primary entries?", "How should music history sources be linked?", "The registry entry has merged aliases naming regional scenes and crossovers; should they be split off?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "work, medium or creative form", "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 heavy metal music, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain heavy metal music and its subgenres, relay history, sound and regional scenes from music history sources with attribution, describe culture and controversies neutrally, and distinguish heavy metal from hard rock and from the chemical sense of heavy metal.", "characteristics": { "substance": "information", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "read and interpreted", "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: African heavy metal, Argentine heavy metal, Buddhist metal, stoner rock, French heavy metal, country metal, Christian metal, Canadian heavy metal, Bangladeshi heavy metal, new wave of British heavy metal, new wave of American heavy metal, US power metal.", "25 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 104 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 heavy metal music, and on what evidence are they told apart?" ], "whatItIsMadeOf": "content that has to be carried by something else", "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": [ "read it and act on what it says", "observe it, measure it, record its state" ], "howItIsRecognised": [ "What is seen is a copy or a performance, not the work. Recognising the work means recognising the content through whatever is carrying it." ], "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": [ "African heavy metal", "Argentine heavy metal", "Buddhist metal", "stoner rock", "French heavy metal", "country metal", "Christian metal", "Canadian heavy metal", "Bangladeshi heavy metal", "new wave of British heavy metal", "new wave of American heavy metal", "US power metal" ] } ], "standing": "Described in 104 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 25 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 heavy metal music from another, and a heavy metal music 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 heavy metal music, 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 heavy metal music, 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 heavy metal music 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 heavy metal music, 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 heavy metal music, 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 heavy metal music 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 heavy metal music 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 heavy metal music, 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 heavy metal music, 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 heavy metal music 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 heavy metal music from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a heavy metal music, 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 heavy metal music, 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 heavy metal music 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 heavy metal music 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 heavy metal music between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a heavy metal music, 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 heavy metal music, 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 heavy metal music 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 heavy metal music, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a heavy metal music 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 heavy metal music, 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 heavy metal music, 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 heavy metal music is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "content-and-access", "name": "Content, encoding and access", "description": "What a heavy metal music says, how it is encoded and who may read it.", "rationale": "An informational thing carries content that can be copied, versioned and withheld, none of which its physical carrier explains.", "layers": [ { "id": "content-and-encoding", "name": "Content and encoding", "description": "The content itself, its format and its language.", "findings": [ { "id": "content-and-format", "name": "Content, format and language", "description": "What a heavy metal music contains and in what form it is held.", "questions": [ { "id": "content-and-format-q01", "text": "What identifies and describes the content of a heavy metal music, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "content-and-format-q02", "text": "Who or what asserted this about the content of a heavy metal music, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "content-and-format-q03", "text": "What may an agent decide or do once the content of a heavy metal music is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "access-and-rights", "name": "Access, rights and retention", "description": "Who may read, copy or change it, and for how long it is kept.", "findings": [ { "id": "access-rules", "name": "Access rules and retention", "description": "The permissions attached to a heavy metal music and the period it survives.", "questions": [ { "id": "access-rules-q01", "text": "What identifies and describes access to a heavy metal music, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "access-rules-q02", "text": "Who or what asserted this about access to a heavy metal music, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "access-rules-q03", "text": "What may an agent decide or do once access to a heavy metal music is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "work-and-manifestation", "name": "Work, version and copy", "description": "Which level of heavy metal music a statement is about.", "rationale": "The work, the edition, the file and the copy in hand are four things; rights and content attach to different ones.", "layers": [ { "id": "levels", "name": "Levels of the thing", "description": "Work, expression, manifestation and item, in plain terms.", "findings": [ { "id": "level-rules", "name": "What belongs at each level", "description": "Which facts hold for the work and which only for one copy.", "questions": [ { "id": "level-rules-q01", "text": "For heavy metal music, which facts belong to the work itself, which to a version, and which to a single copy?", "kind": "boundary" }, { "id": "level-rules-q02", "text": "What identifier exists at each level, and which one is being cited?", "kind": "definition" } ] } ] }, { "id": "versions", "name": "Versions, editions and variants", "description": "How versions differ and which is canonical to whom.", "findings": [ { "id": "version-record", "name": "Versions and canonicity", "description": "Differences that matter and who calls one authoritative.", "questions": [ { "id": "version-record-q01", "text": "Which versions or editions of heavy metal music exist, and how do they differ substantively?", "kind": "definition" }, { "id": "version-record-q02", "text": "Who treats which version as authoritative, and for what purpose?", "kind": "provenance" } ] } ] } ] }, { "id": "authorship-and-rights", "name": "Authorship, rights and permitted use", "description": "Who made heavy metal music and what may be done with it.", "rationale": "Rights are jurisdictional, time-limited and attached to a level, and an agent that ignores that will copy what it may not.", "layers": [ { "id": "authorship", "name": "Authorship and contribution", "description": "Who contributed what, and in what capacity.", "findings": [ { "id": "contribution-record", "name": "Contributors and roles", "description": "The people and bodies behind it, with their roles.", "questions": [ { "id": "contribution-record-q01", "text": "Who authored or contributed to heavy metal music, in what roles, and how is that attested?", "kind": "provenance" }, { "id": "contribution-record-q02", "text": "Where authorship is disputed or anonymous, what is recorded instead?", "kind": "boundary" } ] } ] }, { "id": "rights", "name": "Rights and permissions", "description": "Which rights subsist, where, until when, and what they permit.", "findings": [ { "id": "rights-record", "name": "Rights, term and permitted acts", "description": "The regime in force and what it allows.", "questions": [ { "id": "rights-record-q01", "text": "What rights subsist in heavy metal music, in which jurisdictions, and until when?", "kind": "definition" }, { "id": "rights-record-q02", "text": "Which acts are permitted without further permission, and which must an agent refuse?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a heavy metal music 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 heavy metal music and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a heavy metal music, 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 heavy metal music, 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 heavy metal music 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 heavy metal music is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a heavy metal music, 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 heavy metal music, 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 heavy metal music is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 6, "layers": 12, "findings": 14, "questions": 38 } } } }