{ "model": { "rank": 5364, "code": "thing-q171973", "model_id": "vr.tr.thymine", "name": "thymine", "purpose": "Enable an agent to identify thymine, assess the condition and suitability of a thymine sample, and select actions supported by its chemical form, analytical evidence and intended use.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q171973/", "tier": 2, "score": 68, "payload": { "layer": "wikidata", "aliases": [], "aliasCount": 0, "merged": 0, "knownIn": 68, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q171973", "url": "https://www.wikidata.org/wiki/Q171973", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-09T22:12:55Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 21.6, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0883a-1e39-7cc1-9ab7-ec89d45e4090\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: thymine\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 005: 1001 registe", "usd": 0, "recall": true }, "codex": { "seconds": 70.7, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0883a-1e2f-7790-9197-fbd1b9b02ea9\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: thymine\nRegistry id: vr.tr.thymine\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext " } } }, "metaModel": { "id": "THING-Q171973", "registryId": "vr.tr.thymine", "name": "thymine", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q171973/", "model": { "registry_id": "vr.tr.thymine", "name": "thymine", "purpose": "Enable an agent to identify thymine, assess the condition and suitability of a thymine sample, and select actions supported by its chemical form, analytical evidence and intended use.", "definition": "Thymine is a pyrimidine nucleobase, chemically 5-methyluracil, whose residues in DNA normally pair with adenine through two hydrogen bonds.", "scope_statement": "This model owns thymine as the chemical substance registered as vr.tr.thymine in PHY / PHY.MAT, including molecular identity, material grades, condition-dependent properties and relationships to biological constituents.", "in_scope": [ "Identity of the free nucleobase and distinctions from related pyrimidines", "Thymine sample composition, purity, impurities and analytical confirmation", "Solid and dissolved states with temperature, solvent and pH context", "Relations between free thymine and thymine moieties in larger molecules", "Evidence supporting storage, handling, preparation and use decisions" ], "out_of_scope": [ "Thymidine, ribothymidine and their phosphorylated derivatives as independent substances", "DNA and RNA sequences, structures and whole-polymer properties", "Complete nucleotide metabolism and DNA repair pathways", "Manufacturing processes and commercial formulations containing thymine", "Clinical interpretation of thymine-related measurements" ], "distinguishing_features": [ "The pyrimidine ring has a methyl substituent at position 5, distinguishing thymine from uracil and other methyluracil positional isomers. [ChEBI thymine](https://www.ebi.ac.uk/chebi/CHEBI%3A17821)", "The neutral molecular identity has formula C5H6N2O2 and molar mass approximately 126.11 g/mol; formula alone does not establish the methyl substitution position. [PubChem thymine](https://pubchem.ncbi.nlm.nih.gov/compound/1135)", "A free thymine molecule lacks the attached deoxyribose that defines thymidine. [ChEBI thymidine](https://www.ebi.ac.uk/chebi/CHEBI%3A17748)", "Identity records should resolve to CAS 65-71-4 and PubChem CID 1135, with structural confirmation when a label or synonym is ambiguous. [PubChem thymine](https://pubchem.ncbi.nlm.nih.gov/compound/1135)" ], "characteristics": [ { "name": "Molecular and registry identity", "kind": "category", "unit_or_values": "Structure identifier; molecular formula; CAS; PubChem CID; ChEBI ID; verified EC identifier", "why_it_matters": "Prevents substitution of a related pyrimidine or thymidine for thymine." }, { "name": "Chemical context", "kind": "relation", "unit_or_values": "Free thymine; dissolved thymine; thymine moiety in an identified parent molecule", "why_it_matters": "Determines whether the material is thymine itself or a different molecule containing its base moiety." }, { "name": "Assay and impurity profile", "kind": "measurement", "unit_or_values": "Mass fraction % or molar fraction %; impurity concentrations; analytical method; reporting basis", "why_it_matters": "Distinguishes quantified thymine content from chromatographic area purity and determines suitability." }, { "name": "Material grade", "kind": "category", "unit_or_values": "Supplier-declared grade; reference-material status; certificate and lot", "why_it_matters": "A reagent label does not establish calibration suitability or biological-use suitability." }, { "name": "Physical and solid form", "kind": "state", "unit_or_values": "Solid or solution; observed appearance; established crystal form; water or solvent content", "why_it_matters": "Supports accurate weighing, dissolution and interpretation of thermal measurements." }, { "name": "Solubility and solution concentration", "kind": "measurement", "unit_or_values": "Solubility in g/L or mol/L; concentration in mol/L; solvent; pH; temperature in °C", "why_it_matters": "Determines whether a planned thymine preparation can remain dissolved under its use conditions." }, { "name": "Thermal behavior", "kind": "measurement", "unit_or_values": "Melting, decomposition or sublimation event in °C; pressure in kPa; method; boiling-point evidence status", "why_it_matters": "Prevents a decomposition or sublimation observation from being treated as an ordinary melting or boiling point." }, { "name": "Ionization and tautomeric state", "kind": "state", "unit_or_values": "Assigned charge and tautomer; solvent; pH; temperature; supporting measurement or calculation", "why_it_matters": "Qualifies predictions about solubility, spectra and molecular interactions." }, { "name": "Hazard and regulatory evidence", "kind": "category", "unit_or_values": "Jurisdiction; dated SDS; applicable GHS classification; exposure-limit value and units or explicit evidence gap", "why_it_matters": "Separates documented requirements from missing information and supplier-specific statements." } ], "affordances": [ "Resolve a thymine label against structural identifiers and flag confusion with uracil, methyluracil isomers or thymidine.", "Assess a thymine lot against the purity, impurity and traceability requirements of an intended experiment.", "Calculate a mass or solution preparation using assay basis, solvent conditions and supported solubility.", "Select analytical comparisons that can establish thymine identity and quantify relevant contamination.", "Determine storage, handling and disposal actions from the actual material form and current supporting documentation.", "Link thymine measurements to a specified biological parent or transformation without treating bound and free thymine as interchangeable." ] }, "sources": [], "structure": { "bundles": [ { "id": "thymine-identity-and-boundaries", "name": "Thymine identity and boundaries", "description": "Establishes the molecular identity and separates the free base from related substances and bound moieties.", "rationale": "Thymine names, structural isomers and thymine-containing molecules can otherwise be incorrectly merged.", "layers": [ { "id": "molecular-identification", "name": "Molecular identification", "description": "Connects the thymine name to a verified structure and identifiers.", "findings": [ { "id": "structure-and-identifier-agreement", "name": "Structure and identifier agreement", "description": "Require agreement between the 5-methyluracil structure, substance identifiers and the sample record.", "questions": [ { "text": "Does the assigned structure place the methyl group at position 5 of uracil?", "kind": "definition", "id": "structure-and-identifier-agreement-q01" }, { "text": "Which authoritative records establish the CAS, PubChem, ChEBI and EC identifiers for this substance?", "kind": "provenance", "id": "structure-and-identifier-agreement-q02" } ] } ] }, { "id": "free-base-and-bound-moieties", "name": "Free base and bound moieties", "description": "Sets the ownership boundary for thymine present within a larger chemical entity.", "findings": [ { "id": "parent-molecule-boundary", "name": "Parent molecule boundary", "description": "Represent covalently incorporated thymine through a relation to its parent rather than assigning the parent thymine's substance identity.", "questions": [ { "text": "Is the observation about free thymine, a nucleoside or nucleotide, or a thymine moiety in a polymer?", "kind": "boundary", "id": "parent-molecule-boundary-q01" }, { "text": "Which parent molecule and attachment context must be recorded to interpret the thymine observation?", "kind": "definition", "id": "parent-molecule-boundary-q02" } ] } ] } ] }, { "id": "thymine-lot-quality", "name": "Thymine lot quality", "description": "Captures evidence that a material sample contains the stated amount and identity of thymine.", "rationale": "Thymine content, related-base contamination and certification determine whether a lot can support a particular use.", "layers": [ { "id": "identity-testing", "name": "Identity testing", "description": "Evaluates analytical evidence against plausible thymine substitutions and contaminants.", "findings": [ { "id": "discriminating-analytical-evidence", "name": "Discriminating analytical evidence", "description": "Record what the chosen analytical methods establish and which similar compounds they cannot exclude.", "questions": [ { "text": "Which reference material, chromatogram, mass spectrum or NMR evidence supports the thymine assignment?", "kind": "provenance", "id": "discriminating-analytical-evidence-q01" }, { "text": "Can the method distinguish thymine from uracil, thymidine and methyluracil positional isomers?", "kind": "measurement", "id": "discriminating-analytical-evidence-q02" } ] } ] }, { "id": "assay-and-use-grade", "name": "Assay and use grade", "description": "Relates thymine assay, contaminants and lot documentation to intended use.", "findings": [ { "id": "fitness-of-thymine-material", "name": "Fitness of thymine material", "description": "Keep assay basis, residual water or solvent, impurity limits and certification explicit.", "questions": [ { "text": "Is reported purity an as-received mass assay, a dry-basis assay or chromatographic area percentage, and what impurities were measured?", "kind": "measurement", "id": "fitness-of-thymine-material-q01" }, { "text": "Does the lot evidence support the intended use as a reagent, analytical standard or biological experimental input?", "kind": "action", "id": "fitness-of-thymine-material-q02" } ] } ] } ] }, { "id": "thymine-physical-and-solution-state", "name": "Thymine physical and solution state", "description": "Qualifies solid-state, thermal and solution observations by the conditions under which they apply.", "rationale": "A thymine preparation cannot be assessed from an unqualified property value or nominal concentration.", "layers": [ { "id": "solid-and-thermal-behavior", "name": "Solid and thermal behavior", "description": "Records the material form and the interpretation of heating measurements.", "findings": [ { "id": "qualified-thermal-events", "name": "Qualified thermal events", "description": "Separate observed melting, sublimation and decomposition, retaining sample form and method.", "questions": [ { "text": "What solid form and water or solvent content were established for the measured thymine sample?", "kind": "measurement", "id": "qualified-thermal-events-q01" }, { "text": "Does the reported thermal value describe melting, decomposition or sublimation, and at what pressure and heating conditions?", "kind": "measurement", "id": "qualified-thermal-events-q02" } ] } ] }, { "id": "dissolution-and-speciation", "name": "Dissolution and speciation", "description": "Connects thymine concentration and molecular state to solvent, pH and temperature.", "findings": [ { "id": "usable-thymine-solution", "name": "Usable thymine solution", "description": "Require evidence that the target concentration and molecular-state assumptions hold during preparation and use.", "questions": [ { "text": "What thymine solubility is supported for the actual solvent, pH and temperature, and is the intended concentration below it?", "kind": "measurement", "id": "usable-thymine-solution-q01" }, { "text": "Could a change in pH, temperature or solvent during use alter ionization, tautomer assignment or precipitation?", "kind": "action", "id": "usable-thymine-solution-q02" } ] } ] } ] }, { "id": "thymine-transformations-and-biological-context", "name": "Thymine transformations and biological context", "description": "Records context needed to interpret thymine interactions, transformations and biological measurements.", "rationale": "Observations involving a thymine moiety do not automatically establish behavior of the isolated free base.", "layers": [ { "id": "molecular-interaction-context", "name": "Molecular interaction context", "description": "Qualifies claims about thymine interactions by molecular environment.", "findings": [ { "id": "contextual-interaction-claims", "name": "Contextual interaction claims", "description": "Attach interaction evidence to the actual free-base, nucleoside or polymer context studied.", "questions": [ { "text": "Does an asserted adenine interaction concern isolated thymine, a nucleoside or a defined nucleic-acid structure?", "kind": "boundary", "id": "contextual-interaction-claims-q01" }, { "text": "Which experiment and environmental conditions support the claimed interaction?", "kind": "provenance", "id": "contextual-interaction-claims-q02" } ] } ] }, { "id": "transformation-and-detection-context", "name": "Transformation and detection context", "description": "Distinguishes thymine initially present from thymine generated or modified during processing.", "findings": [ { "id": "origin-of-measured-thymine", "name": "Origin of measured thymine", "description": "Track sample preparation and transformation evidence without importing whole metabolic or repair pathways.", "questions": [ { "text": "Was measured thymine initially free, released from a parent molecule during preparation, or generated by a documented reaction?", "kind": "provenance", "id": "origin-of-measured-thymine-q01" }, { "text": "Which identified reactants, products and conditions establish whether a transformation consumes or produces thymine?", "kind": "boundary", "id": "origin-of-measured-thymine-q02" } ] } ] } ] }, { "id": "thymine-handling-and-regulatory-status", "name": "Thymine handling and regulatory status", "description": "Connects condition and safety evidence to actions on a specific thymine material.", "rationale": "Handling decisions require the actual grade, physical form and jurisdiction, rather than assumptions from thymine's biological role.", "layers": [ { "id": "storage-and-condition", "name": "Storage and condition", "description": "Assesses whether a thymine solid or solution remains suitable after storage and handling.", "findings": [ { "id": "condition-supported-reuse", "name": "Condition-supported reuse", "description": "Link storage history, observed changes and analytical checks to a use or retest decision.", "questions": [ { "text": "What documented storage conditions and retest period apply to this thymine lot or prepared solution?", "kind": "provenance", "id": "condition-supported-reuse-q01" }, { "text": "Do precipitation, contamination, changed appearance or analytical results require retesting before use?", "kind": "action", "id": "condition-supported-reuse-q02" } ] } ] }, { "id": "hazard-and-jurisdiction", "name": "Hazard and jurisdiction", "description": "Records applicable safety documentation and regulatory identity with dates and evidence gaps.", "findings": [ { "id": "documented-handling-basis", "name": "Documented handling basis", "description": "Resolve handling and disposal requirements for the actual thymine material, including any solvent or impurity contribution.", "questions": [ { "text": "Which current jurisdiction-specific SDS and regulatory records establish thymine's classification and applicable exposure limits, if any?", "kind": "provenance", "id": "documented-handling-basis-q01" }, { "text": "What handling and disposal measures follow for this solid or solution, considering its solvent and measured contaminants?", "kind": "action", "id": "documented-handling-basis-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This is recalled knowledge; no sources were consulted.", "Verify the thermal value and its decomposition qualification against a source specifying material purity and measurement method.", "No GHS classification, exposure limit or jurisdiction-specific regulatory status is asserted; these require verification for the relevant material and jurisdiction." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of thymine 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": "CAS Registry Number", "value_or_pattern": "65-71-4", "note": "Identifies thymine as a chemical substance." }, { "scheme": "PubChem CID", "value_or_pattern": "1135", "note": "Compound identifier for thymine." }, { "scheme": "Molecular formula", "value_or_pattern": "C5H6N2O2", "note": "Describes composition but does not uniquely distinguish structural isomers." }, { "scheme": "Nucleobase letter code", "value_or_pattern": "T", "note": "Represents thymine in nucleotide sequences." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of thymine 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": [ "Stores genetic sequence information as a constituent of DNA.", "Used in biochemical research on nucleotide metabolism and DNA damage.", "Used as an analytical reference compound in assays of nucleobases.", "Used as a starting material in chemical synthesis of nucleosides and related compounds." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of thymine 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": "Molar mass", "typical_range": "126.11", "unit": "g/mol" }, { "quantity": "Melting/decomposition temperature", "typical_range": "Approximately 316-317; decomposition accompanies heating in this region", "unit": "°C" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of thymine 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": [ "Ultraviolet radiation can generate photochemical lesions between adjacent pyrimidine residues in DNA, including thymine dimers, which can disrupt replication and transcription.", "Tautomeric changes can alter thymine's hydrogen-bonding pattern and contribute to rare base-pairing errors.", "Impurities or degradation products in laboratory material can compromise analytical and biochemical results." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of thymine 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": "uracil", "difference": "Thymine has a methyl group at carbon 5; uracil lacks that group and is the usual corresponding base in RNA." }, { "name": "thymidine", "difference": "Thymidine contains thymine bonded to a deoxyribose sugar; thymine alone is the base." }, { "name": "deoxythymidine monophosphate", "difference": "This nucleotide contains thymine, deoxyribose and a phosphate group." }, { "name": "adenine", "difference": "Adenine is a purine with two fused rings and is thymine's normal pairing partner in DNA." }, { "name": "cytosine", "difference": "Cytosine is a distinct pyrimidine base with an amino group and normally pairs with guanine." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of thymine this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which primary measurements resolve reported thymine melting, decomposition and sublimation temperatures, and is any boiling-point value experimentally established?", "What solubility and ionization data are reliable across the solvents, pH ranges and temperatures relevant to intended uses?", "Which thymine solid forms are established, and how do water content or residual solvent affect assay and preparation?", "What current EC identity, jurisdiction-specific GHS classifications and substance-specific exposure limits are supported by authoritative records?", "Which impurity thresholds and stability criteria are justified for thymine used as an analytical standard versus a biological experimental reagent?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 16, "questions": 26 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "chemical substance or material", "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 thymine, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an agent to identify thymine, assess the condition and suitability of a thymine sample, and select actions supported by its chemical form, analytical evidence and intended use.", "characteristics": { "substance": "material", "origin": "natural", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured", "consumed or used up" ], "distinguishingFeatures": [ "Described in 68 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 thymine, and on what evidence are they told apart?" ], "whatItIsMadeOf": "matter you can touch", "physicalCharacter": [ "Mobility varies between examples.", "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state", "use it up, and then need more of it" ], "howItIsRecognised": [ "Not recognisable by sight in any reliable way. Appearance varies with grade, form and additives; identification is by label, by documentation, or by assay." ], "relatedModels": [], "standing": "Described in 68 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one thymine from another, and a thymine 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 thymine, 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 thymine, 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 thymine 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 thymine, 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 thymine, 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 thymine 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 thymine 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 thymine, 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 thymine, 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 thymine 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 thymine from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a thymine, 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 thymine, 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 thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "form-and-composition", "name": "Form, composition and condition", "description": "What a thymine is made of, what shape and size it takes, and what state it is in.", "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.", "layers": [ { "id": "form-and-dimensions", "name": "Form and dimensions", "description": "Shape, size, mass and the ranges these take across examples.", "findings": [ { "id": "measurable-dimensions", "name": "Measurable dimensions and their units", "description": "The quantities worth recording and the units they are recorded in.", "questions": [ { "id": "measurable-dimensions-q01", "text": "What identifies and describes the dimensions of a thymine, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "measurable-dimensions-q02", "text": "Who or what asserted this about the dimensions of a thymine, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "measurable-dimensions-q03", "text": "What may an agent decide or do once the dimensions of a thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "material-and-composition", "name": "Material and composition", "description": "Materials, parts and how they are put together.", "findings": [ { "id": "parts-and-materials", "name": "Parts and materials", "description": "What a thymine is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a thymine, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "parts-and-materials-q02", "text": "Who or what asserted this about the composition of a thymine, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "parts-and-materials-q03", "text": "What may an agent decide or do once the composition of a thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "condition-and-integrity", "name": "Condition and integrity", "description": "Wear, damage, health and the difference between working and broken.", "findings": [ { "id": "condition-assessment", "name": "Condition, damage and health", "description": "How the condition of a thymine is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a thymine, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "condition-assessment-q02", "text": "Who or what asserted this about the condition of a thymine, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "condition-assessment-q03", "text": "What may an agent decide or do once the condition of a thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "place-and-movement", "name": "Place and movement", "description": "Where a thymine is, how it got there and where it may go (varies).", "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.", "layers": [ { "id": "location-and-placement", "name": "Location and placement", "description": "Position, containment and the reference frame the position is given in.", "findings": [ { "id": "position-and-frame", "name": "Position, container and reference frame", "description": "Where a thymine is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a thymine, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "position-and-frame-q02", "text": "Who or what asserted this about the location of a thymine, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "position-and-frame-q03", "text": "What may an agent decide or do once the location of a thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "movement-and-transfer", "name": "Movement and transfer", "description": "How a thymine is carried, installed or relocated.", "findings": [ { "id": "movement-events", "name": "Movement events and constraints", "description": "What counts as a movement, what records it and what limits it.", "questions": [ { "id": "movement-events-q01", "text": "What identifies and describes the movement of a thymine, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "movement-events-q02", "text": "Who or what asserted this about the movement of a thymine, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "movement-events-q03", "text": "What may an agent decide or do once the movement of a thymine 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 thymine 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 thymine between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a thymine, 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 thymine, 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 thymine 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 thymine, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a thymine 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 thymine, 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 thymine, 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 thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "use-and-operation", "name": "Use and operation", "description": "What can be done with a thymine and what it takes to do it.", "rationale": "An agent that can recognise a thing but not act on it has only half a model.", "layers": [ { "id": "intended-use", "name": "Intended use and function", "description": "What a thymine is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a thymine performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a thymine, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "function-and-purpose-q02", "text": "Who or what asserted this about the use of a thymine, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "function-and-purpose-q03", "text": "What may an agent decide or do once the use of a thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "handling-and-procedure", "name": "Handling and procedure", "description": "The steps, skills and tools involved in using a thymine.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a thymine at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a thymine, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "procedures-and-skills-q02", "text": "Who or what asserted this about handling a thymine, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "procedures-and-skills-q03", "text": "What may an agent decide or do once handling a thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "supply-and-consumption", "name": "Supply and consumption", "description": "Quantities, rates and what running out means.", "findings": [ { "id": "consumption-and-stock", "name": "Consumption, stock and replenishment", "description": "How much of a thymine there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a thymine, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "consumption-and-stock-q02", "text": "Who or what asserted this about the supply of a thymine, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "consumption-and-stock-q03", "text": "What may an agent decide or do once the supply of a thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "composition-and-identity", "name": "Composition, grade and chemical identity", "description": "What thymine is made of and how pure the thing in hand is.", "rationale": "Grade decides what a substance may be used for, so a model that records only the name cannot support any decision about use.", "layers": [ { "id": "chemical-identity", "name": "Chemical identity", "description": "Formula, structure and the registry numbers that name it unambiguously.", "findings": [ { "id": "identity-record", "name": "Identity and registry numbers", "description": "What identifies this substance across suppliers and regulators.", "questions": [ { "id": "identity-record-q01", "text": "What formula, structure and registry identifiers name thymine unambiguously?", "kind": "definition" }, { "id": "identity-record-q02", "text": "Which related substances share a name in common use but not an identifier?", "kind": "boundary" } ] } ] }, { "id": "grade-and-impurities", "name": "Grade, purity and impurities", "description": "The specification a batch meets and what else is in it.", "findings": [ { "id": "specification", "name": "Specification and assay", "description": "How purity is stated and measured, and which impurities matter.", "questions": [ { "id": "specification-q01", "text": "What grades of thymine exist, how is purity assayed, and which impurities are limited?", "kind": "measurement" }, { "id": "specification-q02", "text": "Which use requires which grade, and what happens when a lower grade is substituted?", "kind": "action" } ] } ] } ] }, { "id": "properties-and-behaviour", "name": "Properties and behaviour", "description": "How thymine behaves under conditions an agent can measure or change.", "rationale": "Physical constants are the part of a substance model that transfers between contexts, and each needs its unit and its conditions.", "layers": [ { "id": "physical-constants", "name": "Physical constants", "description": "Values that hold for the pure substance, with their conditions.", "findings": [ { "id": "constants-record", "name": "Constants and conditions", "description": "The quantities worth recording and the state they apply in.", "questions": [ { "id": "constants-record-q01", "text": "What are the defining physical constants of thymine, in what units and under what conditions?", "kind": "measurement" }, { "id": "constants-record-q02", "text": "Which of these values change with grade or form rather than being fixed?", "kind": "boundary" } ] } ] }, { "id": "stability-and-reactivity", "name": "Stability and reactivity", "description": "What it reacts with, degrades into, and how it is stored.", "findings": [ { "id": "incompatibilities", "name": "Incompatibilities and degradation", "description": "What must not meet it, and what it becomes over time.", "questions": [ { "id": "incompatibilities-q01", "text": "What is thymine incompatible with, and what does it degrade into under storage?", "kind": "definition" }, { "id": "incompatibilities-q02", "text": "What storage and handling does that require, and who is competent to do it?", "kind": "action" } ] } ] } ] }, { "id": "hazard-and-regulation", "name": "Hazard classification and regulation", "description": "How thymine can harm, and what the law says about holding and moving it.", "rationale": "A substance model without its hazard class and its regulatory identity is unusable in exactly the situations that matter.", "layers": [ { "id": "hazard-class", "name": "Hazard classification", "description": "Classified hazards, exposure limits and protective measures.", "findings": [ { "id": "classified-hazards", "name": "Classified hazards and limits", "description": "The classification, the scheme it belongs to, and the limits set.", "questions": [ { "id": "classified-hazards-q01", "text": "How is thymine classified for hazard, under which scheme, and what exposure limits apply?", "kind": "definition" }, { "id": "classified-hazards-q02", "text": "What protection does handling require, and what must an agent refuse to do without it?", "kind": "action" } ] } ] }, { "id": "regulatory-identity", "name": "Regulatory identity and control", "description": "Registration, restriction and transport rules by jurisdiction.", "findings": [ { "id": "controls", "name": "Controls and jurisdiction", "description": "Where it is restricted and what the restriction attaches to.", "questions": [ { "id": "controls-q01", "text": "Which registrations, restrictions or transport rules cover thymine, and where?", "kind": "provenance" }, { "id": "controls-q02", "text": "Does the control attach to the substance, its concentration, or its intended use?", "kind": "boundary" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a thymine 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 thymine and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a thymine, 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 thymine, 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 thymine 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 thymine is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a thymine, 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 thymine, 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 thymine is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 9, "layers": 20, "findings": 22, "questions": 60 } } } }