{ "model": { "rank": 3622, "code": "thing-q47770", "model_id": "vr.tr.blu-ray-disc", "name": "Blu-ray Disc", "purpose": "Enable an agent to identify a Blu-ray Disc, assess its readability and recording state, and determine compatible, permitted playback, copying, recording, and preservation actions.", "family": "Thing Registry", "category": "Activities and processes", "status": "research-draft", "kind": "thing", "plane": "ACT", "domain": "ACT.ACT", "industry": "", "version": "", "url": "/models/thing/q47770/", "tier": 2, "score": 83, "payload": { "layer": "wikidata", "aliases": [ "High Fidelity Pure Audio", "Paper disc", "Blu-ray 3D" ], "aliasCount": 3, "merged": 3, "knownIn": 83, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q47770", "url": "https://www.wikidata.org/wiki/Q47770", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T14:42:40Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 27.7, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c51-3706-7090-8a2a-6c897ee670d9\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: Blu-ray Disc\nSense to describe: (none recorded)\nDomain code: ACT.ACT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 004: 1001 re", "usd": 0, "recall": true }, "codex": { "seconds": 68.3, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c51-3705-7cd0-ad4f-62e5131bec7b\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: Blu-ray Disc\nRegistry id: vr.tr.blu-ray-disc\nPlane / domain: ACT / ACT.ACT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n" } } }, "metaModel": { "id": "THING-Q47770", "registryId": "vr.tr.blu-ray-disc", "name": "Blu-ray Disc", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "ACT.ACT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q47770/", "model": { "registry_id": "vr.tr.blu-ray-disc", "name": "Blu-ray Disc", "purpose": "Enable an agent to identify a Blu-ray Disc, assess its readability and recording state, and determine compatible, permitted playback, copying, recording, and preservation actions.", "definition": "Blu-ray Disc is a family of optical disc formats that uses a nominal 405 nm blue-violet laser to read data, and in recordable variants to write data, supporting higher storage densities than DVD.", "scope_statement": "This model owns Blu-ray Disc as a family of optical storage media and individual disc instances, including format identity, recorded organization, compatibility requirements, and physical condition; it distinguishes the carrier from the audiovisual work or data stored on it.", "in_scope": [ "Identification of individual Blu-ray discs and their declared format variants", "Distinctions among prerecorded BD-ROM, recordable BD-R, and rewritable BD-RE media", "Disc capacity, recording state, and organization of recorded content", "Compatibility between a particular disc and a drive or playback system", "Physical condition, observed readability, and preservation actions" ], "out_of_scope": [ "Interpretation, authorship, and artistic assessment of the recorded film or other work", "Internal engineering and maintenance of optical drives and players", "Independent models of CDs, DVDs, and other optical storage families", "Full specifications of video codecs, file systems, and cryptographic systems", "Ownership and licensing of intellectual property beyond recording applicable permissions" ], "distinguishing_features": [ "Use media identification reported by a compatible drive, alongside packaging and markings, to distinguish Blu-ray media from visually similar CDs and DVDs.", "Distinguish BD-ROM, BD-R, and BD-RE by reported media type and supported recording operations; the presence of files alone does not establish whether the disc is rewritable.", "Identify a Blu-ray video release through its application-format organization and playback requirements; a Blu-ray data disc containing a video file is not automatically an authored Blu-ray video disc.", "Record standard Blu-ray, Ultra HD Blu-ray, and BDXL designations separately where applicable; a generic Blu-ray label does not establish compatibility with every Blu-ray-capable device.", "Separate the physical disc instance from its title or edition: two discs carrying the same work can differ in format, region restrictions, recording layout, and condition." ], "characteristics": [ { "name": "Media type", "kind": "category", "unit_or_values": "BD-ROM | BD-R | BD-RE | unresolved", "why_it_matters": "Determines whether the carrier is prerecorded, recordable, or rewritable and constrains available actions." }, { "name": "Format designations", "kind": "category", "unit_or_values": "Reported or declared physical and application format designations, including BDXL or Ultra HD Blu-ray where applicable", "why_it_matters": "Prevents a broad Blu-ray classification from being mistaken for a complete compatibility assessment." }, { "name": "Recording-layer count", "kind": "measurement", "unit_or_values": "Integer count of data-bearing layers, or unknown", "why_it_matters": "Helps explain capacity and identifies requirements that may exceed a drive's supported media variants." }, { "name": "Capacity and allocation", "kind": "measurement", "unit_or_values": "Nominal capacity, reported addressable capacity, occupied space, and writable space in bytes, each with its evidence source", "why_it_matters": "Supports recording and migration planning without conflating advertised capacity with usable free space." }, { "name": "Recording state", "kind": "state", "unit_or_values": "Blank | recorded | appendable | closed to further recording | unresolved, interpreted according to media type", "why_it_matters": "Determines whether an intended recording operation is possible and whether existing data could be affected." }, { "name": "Recorded organization", "kind": "category", "unit_or_values": "Observed file system, application format, volume identifiers, and session or track information where exposed", "why_it_matters": "Separates physical access to sectors from the ability to locate files or play an authored release." }, { "name": "Playback dependencies", "kind": "relation", "unit_or_values": "Required drive capabilities, software support, decoding support, and applicable protection or region conditions", "why_it_matters": "Explains why a readable disc may still fail to play in a particular system." }, { "name": "Read verification", "kind": "state", "unit_or_values": "Untested | partially read | fully read | read errors observed, with device, date, method, and tested extent", "why_it_matters": "Prevents successful mounting or brief playback from being treated as proof that the entire disc is recoverable." }, { "name": "Physical condition", "kind": "state", "unit_or_values": "Observed contamination, scratches, cracks, warping, or layer deterioration, with location and severity", "why_it_matters": "Guides handling and distinguishes visible damage from measured read failures." }, { "name": "Action permissions", "kind": "relation", "unit_or_values": "Applicable owner authorization, content permissions, and organizational policies for playback, copying, recording, and disposal", "why_it_matters": "Keeps technical capability separate from permission to perform an operation." } ], "affordances": [ "Identify the disc's media type and format requirements using markings and compatible-drive reports.", "Match the disc to a drive and playback environment that supports its specific requirements.", "Inspect recorded organization and verify readability across a documented extent.", "Record, append, or rewrite data when the media type, recording state, equipment, and authorization permit.", "Create and verify an authorized preservation copy while recording unreadable regions and dependencies.", "Select handling, storage, cleaning, or retirement actions from observed condition and read results." ] }, "sources": [], "structure": { "bundles": [ { "id": "disc-identity-and-format", "name": "Disc identity and format", "description": "Identify the Blu-ray carrier and establish which physical and application-format claims are supported.", "rationale": "Blu-ray branding alone does not establish recording capability, capacity, or playback compatibility.", "layers": [ { "id": "carrier-identification", "name": "Carrier identification", "description": "Separate observed media identity from packaging claims and catalog descriptions.", "findings": [ { "id": "media-type-evidence", "name": "Media type evidence", "description": "Record the evidence needed to identify the carrier as Blu-ray and distinguish BD-ROM, BD-R, and BD-RE.", "questions": [ { "text": "Which media type does a compatible drive report, and does it agree with the disc markings?", "kind": "definition", "id": "media-type-evidence-q01" }, { "text": "Which identification claims come from direct inspection, drive output, packaging, or a catalog record?", "kind": "provenance", "id": "media-type-evidence-q02" } ] } ] }, { "id": "format-and-edition-boundaries", "name": "Format and edition boundaries", "description": "Locate the disc within the format family without confusing its physical specification with its recorded work.", "findings": [ { "id": "variant-and-content-separation", "name": "Variant and content separation", "description": "Record physical format designations, application format, and edition relationships as distinct facts.", "questions": [ { "text": "Which evidence establishes any BDXL, Ultra HD Blu-ray, or authored Blu-ray video designation?", "kind": "definition", "id": "variant-and-content-separation-q01" }, { "text": "Which identifiers describe this physical disc, and which describe the release, edition, or work stored on it?", "kind": "boundary", "id": "variant-and-content-separation-q02" } ] } ] } ] }, { "id": "capacity-and-recording", "name": "Capacity and recording", "description": "Describe available storage and determine which recording operations the disc can support.", "rationale": "A recording decision depends on media type, occupied space, recording state, and device support together.", "layers": [ { "id": "storage-layout", "name": "Storage layout", "description": "Establish the disc's reported storage extent and distinguish nominal capacity from allocation.", "findings": [ { "id": "capacity-evidence", "name": "Capacity evidence", "description": "Capture layer count and capacity measurements with the method and units used.", "questions": [ { "text": "What layer count and addressable capacity are reported, and by which device or utility?", "kind": "measurement", "id": "capacity-evidence-q01" }, { "text": "How much space is occupied or writable, and how do those measurements relate to the packaging's nominal capacity?", "kind": "measurement", "id": "capacity-evidence-q02" } ] } ] }, { "id": "recording-transitions", "name": "Recording transitions", "description": "Assess the permissible transition from the disc's current state to a proposed recorded state.", "findings": [ { "id": "write-operation-eligibility", "name": "Write operation eligibility", "description": "Require explicit evidence for recording, appending, erasing, or rewriting instead of inferring these capabilities from unused capacity.", "questions": [ { "text": "Is this disc blank, appendable, rewritable, or closed to further recording under its actual format?", "kind": "measurement", "id": "write-operation-eligibility-q01" }, { "text": "Which proposed write operation is supported by both this medium and the selected drive, and what existing data would it affect?", "kind": "action", "id": "write-operation-eligibility-q02" } ] } ] } ] }, { "id": "content-access-and-playback", "name": "Content access and playback", "description": "Describe how recorded sectors become accessible files or playable audiovisual content.", "rationale": "Physical readability, file-system access, application support, and playback authorization can fail independently.", "layers": [ { "id": "recorded-content-organization", "name": "Recorded content organization", "description": "Identify how the disc organizes data and what software is needed to interpret it.", "findings": [ { "id": "data-versus-authored-video", "name": "Data versus authored video", "description": "Distinguish general file storage from an authored video application and record evidence for the distinction.", "questions": [ { "text": "What file system and directory structures are observable, and what application format do they support identifying?", "kind": "definition", "id": "data-versus-authored-video-q01" }, { "text": "Does the disc contain an authored playback structure, ordinary media files, other data, or a combination?", "kind": "boundary", "id": "data-versus-authored-video-q02" } ] } ] }, { "id": "playback-compatibility", "name": "Playback compatibility", "description": "Evaluate the complete playback environment for the particular disc.", "findings": [ { "id": "compatibility-and-access-conditions", "name": "Compatibility and access conditions", "description": "Record media support, software requirements, and applicable access conditions without assuming they are uniform across Blu-ray releases.", "questions": [ { "text": "Does the selected drive and playback software support this disc's physical variant and recorded application format?", "kind": "action", "id": "compatibility-and-access-conditions-q01" }, { "text": "What region, content-protection, decoding, or output requirements are evidenced for this release and playback environment?", "kind": "boundary", "id": "compatibility-and-access-conditions-q02" }, { "text": "If playback fails, which stage fails: sector reading, file access, application interpretation, access authorization, decoding, or output?", "kind": "measurement", "id": "compatibility-and-access-conditions-q03" } ] } ] } ] }, { "id": "readability-and-preservation", "name": "Readability and preservation", "description": "Assess the physical disc and preserve recoverable content through documented, authorized actions.", "rationale": "A disc can look intact while containing unreadable regions, and a successful playback sample does not verify complete recovery.", "layers": [ { "id": "condition-and-read-evidence", "name": "Condition and read evidence", "description": "Keep visible condition separate from results obtained by reading the medium.", "findings": [ { "id": "readability-assessment", "name": "Readability assessment", "description": "Document defects and the extent of read testing so confidence remains tied to evidence.", "questions": [ { "text": "What contamination, scratches, cracks, warping, or layer changes are visible, and where are they located?", "kind": "measurement", "id": "readability-assessment-q01" }, { "text": "Which sectors or files were tested, with which drive and method, and where did errors or retries occur?", "kind": "measurement", "id": "readability-assessment-q02" }, { "text": "Would another compatible drive or an appropriate cleaning step help distinguish a disc defect from an equipment-specific failure?", "kind": "action", "id": "readability-assessment-q03" } ] } ] }, { "id": "preservation-and-retirement", "name": "Preservation and retirement", "description": "Plan copying, retention, and retirement with explicit recovery objectives and permissions.", "findings": [ { "id": "verified-preservation-action", "name": "Verified preservation action", "description": "Specify what must survive migration and what evidence establishes that the authorized copy meets that objective.", "questions": [ { "text": "Must preservation retain selected files, the full logical disc structure, interactive playback behavior, or another explicitly defined property?", "kind": "boundary", "id": "verified-preservation-action-q01" }, { "text": "What authorization permits the proposed copy or disposal, and how will copied data be verified against the readable source?", "kind": "action", "id": "verified-preservation-action-q02" }, { "text": "Which unreadable regions or playback dependencies remain unresolved after copying, and do they require retaining the original disc?", "kind": "action", "id": "verified-preservation-action-q03" } ] } ] } ] }, { "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 optical storage format family and physical medium; the supplied domain code does not establish a narrower sense.", "Specification editions, detailed compatibility requirements and content-protection versions require verification; no documents were consulted for this recall.", "Capacity depends on format and layer count; archival lifetime cannot be inferred from the Blu-ray designation alone." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of Blu-ray Disc 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": [ "BD-ROM: prerecorded read-only discs", "BD-R: write-once recordable discs", "BD-RE: rewritable discs", "BDXL: higher-capacity multilayer recordable and rewritable discs", "Ultra HD Blu-ray: a disc format for distributing ultra-high-definition video" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of Blu-ray Disc this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "Blu-ray format abbreviations", "value_or_pattern": "BD-ROM, BD-R, BD-RE", "note": "These identify format families and recording capabilities, not individual discs or titles." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of Blu-ray Disc this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Blu-ray Disc Association format specifications define BD-ROM, BD-R and BD-RE.", "Blu-ray Disc Association BDXL specifications define higher-capacity recordable and rewritable formats.", "Blu-ray Disc Association Ultra HD Blu-ray specifications define the ultra-high-definition video distribution format.", "Universal Disk Format (UDF), maintained by the Optical Storage Technology Association, specifies a filesystem used on Blu-ray discs.", "Advanced Access Content System (AACS), specified by AACS Licensing Administrator, provides content protection used on commercial Blu-ray releases." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of Blu-ray Disc 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": [ "Distribution of high-definition and ultra-high-definition films and television programmes", "Distribution of video games for compatible consoles", "Offline data backup and archiving", "Recording and exchange of video or other large datasets" ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of Blu-ray Disc 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": "Nominal laser wavelength", "typical_range": "405", "unit": "nm" }, { "quantity": "Common disc diameter", "typical_range": "120", "unit": "mm" }, { "quantity": "Nominal disc thickness", "typical_range": "1.2", "unit": "mm" }, { "quantity": "Nominal conventional single-layer or dual-layer capacity", "typical_range": "25 or 50", "unit": "GB (decimal)" }, { "quantity": "Nominal BDXL capacity", "typical_range": "100 for rewritable discs; 100 or 128 for write-once discs", "unit": "GB (decimal)" }, { "quantity": "Nominal Ultra HD Blu-ray capacity", "typical_range": "50, 66 or 100", "unit": "GB (decimal)" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of Blu-ray Disc 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": [ "Scratches, fingerprints and contamination can produce read errors or prevent playback.", "Heat, sunlight, moisture and material degradation can damage discs or shorten their usable life.", "Interrupted recording, unsuitable media or a failing writer can leave recordings incomplete or unreadable.", "Drive and player compatibility varies by format; conventional Blu-ray support does not establish BDXL or Ultra HD Blu-ray support.", "Content protection, region coding or unsupported playback software can block playback of otherwise readable discs." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of Blu-ray Disc this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-regional-variation", "name": "Regional variation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Conventional Blu-ray video supports regions A, B and C; individual releases may permit multiple regions or all regions.", "Ultra HD Blu-ray discs do not use the conventional Blu-ray region-code system.", "Available audio tracks, subtitles, edits and supplementary material can differ between regional releases." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of Blu-ray Disc 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": "DVD", "difference": "DVD uses a red laser and a lower-density optical format; a conventional single-layer DVD holds about 4.7 GB compared with 25 GB for Blu-ray." }, { "name": "Compact Disc", "difference": "CD uses an infrared laser and a lower-density format, commonly holding roughly 700 MB of data." }, { "name": "HD DVD", "difference": "HD DVD was a competing blue-violet-laser optical format with different disc structures and incompatible format specifications." }, { "name": "Blu-ray player", "difference": "A Blu-ray player is equipment that reads and plays compatible discs; Blu-ray Disc denotes the storage medium and its format family." }, { "name": "Ultra HD Blu-ray", "difference": "Ultra HD Blu-ray is a specialised member of the Blu-ray family with distinct video and playback requirements, rather than a synonym for every Blu-ray disc." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of Blu-ray Disc this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative specifications should anchor the supported Blu-ray variants, capacities, layer configurations, and recording-state terminology?", "Should BDXL and Ultra HD Blu-ray remain variants within this registry entry, or do existing registry or world-model entries already own their additional requirements?", "Which drive reports and testing methods provide sufficiently reliable evidence of media identity and complete readability across the variants in scope?", "Which manufacturer or preservation guidance should govern cleaning, storage conditions, and retirement decisions for each media type?", "How should release-specific playback restrictions and preservation permissions be represented when packaging, observed behavior, and available documentation disagree?" ], "statistics": { "bundles": 5, "layers": 9, "findings": 17, "questions": 28 } }, "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 Blu-ray Disc, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an agent to identify a Blu-ray Disc, assess its readability and recording state, and determine compatible, permitted playback, copying, recording, and preservation actions.", "characteristics": { "substance": "activity", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: High Fidelity Pure Audio, Paper disc, Blu-ray 3D.", "3 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 83 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 Blu-ray Disc, and on what evidence are they told apart?" ], "whatItIsMadeOf": "something that happens over time", "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": [ "High Fidelity Pure Audio", "Paper disc", "Blu-ray 3D" ] } ], "standing": "Described in 83 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 3 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 Blu-ray Disc from another, and a Blu-ray Disc 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 Blu-ray Disc, 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 Blu-ray Disc, 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 Blu-ray Disc 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 Blu-ray Disc, 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 Blu-ray Disc, 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 Blu-ray Disc 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 Blu-ray Disc 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 Blu-ray Disc, 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 Blu-ray Disc, 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 Blu-ray Disc 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 Blu-ray Disc from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a Blu-ray Disc, 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 Blu-ray Disc, 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 Blu-ray Disc 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 Blu-ray Disc 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 Blu-ray Disc between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a Blu-ray Disc, 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 Blu-ray Disc, 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 Blu-ray Disc 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 Blu-ray Disc, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a Blu-ray Disc 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 Blu-ray Disc, 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 Blu-ray Disc, 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 Blu-ray Disc is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "process-and-outcome", "name": "Process, inputs and outcome", "description": "How a Blu-ray Disc proceeds, what it needs and what it leaves behind.", "rationale": "An activity is known by its steps and its results, and both have to be recordable while it is still running.", "layers": [ { "id": "steps-and-sequence", "name": "Steps and sequence", "description": "The steps of a Blu-ray Disc, their order and what may run in parallel.", "findings": [ { "id": "steps-and-preconditions", "name": "Steps, preconditions and completion", "description": "What has to be true before each step of a Blu-ray Disc and what marks it done.", "questions": [ { "id": "steps-and-preconditions-q01", "text": "What identifies and describes a step of a Blu-ray Disc, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "steps-and-preconditions-q02", "text": "Who or what asserted this about a step of a Blu-ray Disc, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "steps-and-preconditions-q03", "text": "What may an agent decide or do once a step of a Blu-ray Disc is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "inputs-and-results", "name": "Inputs, resources and results", "description": "What a Blu-ray Disc consumes and what it produces.", "findings": [ { "id": "inputs-and-outputs", "name": "Inputs, outputs and side effects", "description": "The resources a Blu-ray Disc takes and the results it leaves, wanted or not.", "questions": [ { "id": "inputs-and-outputs-q01", "text": "What identifies and describes the inputs and results of a Blu-ray Disc, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "inputs-and-outputs-q02", "text": "Who or what asserted this about the inputs and results of a Blu-ray Disc, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "inputs-and-outputs-q03", "text": "What may an agent decide or do once the inputs and results of a Blu-ray Disc 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 Blu-ray Disc 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 Blu-ray Disc 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 Blu-ray Disc 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 Blu-ray Disc 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 Blu-ray Disc?", "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 Blu-ray Disc?", "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 Blu-ray Disc 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 Blu-ray Disc and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a Blu-ray Disc, 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 Blu-ray Disc, 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 Blu-ray Disc 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 Blu-ray Disc is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a Blu-ray Disc, 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 Blu-ray Disc, 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 Blu-ray Disc 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 } } } }