{
    "model": {
        "rank": 5106,
        "code": "thing-q131299",
        "model_id": "vr.tr.si-prefix",
        "name": "SI prefix",
        "purpose": "Enable an agent to recognise an SI prefix, interpret its exact decimal scaling, and judge whether its use in a unit expression is valid.",
        "family": "Thing Registry",
        "category": "Information and virtual systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "INF",
        "domain": "INF.MED",
        "industry": "",
        "version": "",
        "url": "/models/thing/q131299/",
        "tier": 2,
        "score": 70,
        "payload": {
            "layer": "wikidata",
            "aliases": [],
            "aliasCount": 0,
            "merged": 0,
            "knownIn": 70,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q131299",
                "url": "https://www.wikidata.org/wiki/Q131299",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-09T21:40:31Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 18.8,
                        "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: 01a0881c-c958-7f10-ac7e-bba5193f84d4\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: SI prefix\nSense to describe: (none recorded)\nDomain code: INF.MED\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 005: 1001 regis",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 48.8,
                        "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: 01a0881c-c95e-7523-ac83-7f33c925c917\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: SI prefix\nRegistry id: vr.tr.si-prefix\nPlane / domain: INF / INF.MED\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nCont"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q131299",
                "registryId": "vr.tr.si-prefix",
                "name": "SI prefix",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "INF.MED"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q131299/",
            "model": {
                "registry_id": "vr.tr.si-prefix",
                "name": "SI prefix",
                "purpose": "Enable an agent to recognise an SI prefix, interpret its exact decimal scaling, and judge whether its use in a unit expression is valid.",
                "definition": "An SI prefix is an internationally agreed name and symbol placed before a unit name or symbol to form a decimal multiple or submultiple of that unit.",
                "scope_statement": "This model owns SI prefixes as standardised informational modifiers of unit names and symbols, including their identities, exact scale factors, formation rules, and documented authority; it distinguishes a prefix from a unit, quantity, or measurement.",
                "in_scope": [
                    "Canonical prefix names and case-sensitive symbols",
                    "Exact powers of ten represented by prefixes",
                    "Rules for attaching prefixes to unit names and symbols",
                    "Interpretation of prefixes in powered and compound unit expressions",
                    "Standardisation provenance and support in particular systems"
                ],
                "out_of_scope": [
                    "Definitions and realisations of SI base and derived units",
                    "Measured quantities, observations, and measurement uncertainty",
                    "IEC binary prefixes and their powers-of-two scaling",
                    "General linguistic prefixes and unrelated abbreviations",
                    "Complete grammars for quantity expressions and dimensional analysis"
                ],
                "distinguishing_features": [
                    "An SI prefix denotes an exact power-of-ten multiplier; it does not independently denote a physical quantity or unit.",
                    "Its identity requires an authorised name-symbol-factor association, rather than any convenient decimal abbreviation.",
                    "Symbol case is significant: m denotes milli and M denotes mega.",
                    "SI prefixes differ from binary prefixes: kilo denotes 10^3, whereas kibi denotes 2^10.",
                    "A prefix and unit symbol form one unit symbol without an intervening space; an exponent applies to that combined unit."
                ],
                "characteristics": [
                    {
                        "name": "Canonical name",
                        "kind": "category",
                        "unit_or_values": "Standardised prefix name, with language identified where relevant",
                        "why_it_matters": "Supports recognition while separating normative names from translations and informal spellings."
                    },
                    {
                        "name": "Canonical symbol",
                        "kind": "category",
                        "unit_or_values": "Exact case-sensitive symbol, such as k, M, m, or μ",
                        "why_it_matters": "A case change or character substitution can alter the scale or break recognition."
                    },
                    {
                        "name": "Decimal exponent",
                        "kind": "measurement",
                        "unit_or_values": "Dimensionless signed integer n, giving the exact multiplier 10^n",
                        "why_it_matters": "Enables exact conversion without treating the prefix as an approximate numerical value."
                    },
                    {
                        "name": "Authorising standard record",
                        "kind": "relation",
                        "unit_or_values": "Applicable SI publication or resolution, with edition or date and supporting passage",
                        "why_it_matters": "Distinguishes verified SI status from a proposed, historical, or informal modifier."
                    },
                    {
                        "name": "Attachment eligibility",
                        "kind": "relation",
                        "unit_or_values": "Target unit and applicable prefix-formation rule, including restrictions and exceptions",
                        "why_it_matters": "Having a valid prefix does not make every prefix-unit combination valid."
                    },
                    {
                        "name": "Implementation support",
                        "kind": "state",
                        "unit_or_values": "Supported, unsupported, partially supported, or unverified in a named parser, format, or system version",
                        "why_it_matters": "Separates standards validity from whether a particular tool can correctly process the prefix."
                    }
                ],
                "affordances": [
                    "Resolve a name or symbol to a verified SI prefix and its exact decimal exponent.",
                    "Validate a prefix-unit combination against the applicable formation rules.",
                    "Convert between differently prefixed forms of the same unit while preserving quantity value.",
                    "Interpret scaling correctly when a prefixed unit is raised to a power.",
                    "Detect ambiguous case, character substitutions, stacked prefixes, and confusion with binary prefixes.",
                    "Select a readable prefixed representation subject to domain conventions and destination-system support."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "prefix-identity",
                        "name": "Prefix identity",
                        "description": "The name, symbol, and exact scaling association that identifies an SI prefix.",
                        "rationale": "An agent must recognise the intended modifier before interpreting or rewriting a quantity expression.",
                        "layers": [
                            {
                                "id": "names-and-symbols",
                                "name": "Names and symbols",
                                "description": "Canonical forms and the boundaries between authorised symbols and input variants.",
                                "findings": [
                                    {
                                        "id": "canonical-prefix-token",
                                        "name": "Canonical prefix token",
                                        "description": "Record the prefix's name and exact symbol, preserving case and distinguishing canonical characters from accepted input substitutions.",
                                        "questions": [
                                            {
                                                "text": "What canonical name and case-sensitive symbol identify this prefix in the applicable SI reference?",
                                                "kind": "definition",
                                                "id": "canonical-prefix-token-q01"
                                            },
                                            {
                                                "text": "Which translations, character variants, or ASCII substitutions are encountered, and which may the target system safely normalise?",
                                                "kind": "action",
                                                "id": "canonical-prefix-token-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "exact-decimal-scale",
                                "name": "Exact decimal scale",
                                "description": "The mathematical meaning of the prefix independent of any attached unit.",
                                "findings": [
                                    {
                                        "id": "power-of-ten-association",
                                        "name": "Power-of-ten association",
                                        "description": "Represent scaling as an exact integer exponent of ten, distinct from binary scaling or approximate magnitude labels.",
                                        "questions": [
                                            {
                                                "text": "Which integer n defines this prefix's exact multiplier 10^n?",
                                                "kind": "measurement",
                                                "id": "power-of-ten-association-q01"
                                            },
                                            {
                                                "text": "Does the observed token denote this decimal prefix, a binary prefix, or an informal abbreviation in its context?",
                                                "kind": "boundary",
                                                "id": "power-of-ten-association-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "unit-formation",
                        "name": "Unit formation",
                        "description": "How a prefix may form a valid unit name or symbol.",
                        "rationale": "Prefix validity depends on attachment rules, including exceptions that simple string concatenation misses.",
                        "layers": [
                            {
                                "id": "attachment-rules",
                                "name": "Attachment rules",
                                "description": "Joining a single prefix to an eligible unit without creating an independent unit or stacked prefix.",
                                "findings": [
                                    {
                                        "id": "single-prefix-attachment",
                                        "name": "Single-prefix attachment",
                                        "description": "Check direct attachment to a unit symbol and distinguish valid prefix formation from standalone or compounded prefix use.",
                                        "questions": [
                                            {
                                                "text": "Which unit does the prefix modify, and does the applicable reference permit that combination?",
                                                "kind": "boundary",
                                                "id": "single-prefix-attachment-q01"
                                            },
                                            {
                                                "text": "Does the expression attach one prefix directly to the unit symbol without a space or another prefix?",
                                                "kind": "action",
                                                "id": "single-prefix-attachment-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "exception-sensitive-formation",
                                "name": "Exception-sensitive formation",
                                "description": "Formation rules that require knowledge of the unit rather than the prefix alone.",
                                "findings": [
                                    {
                                        "id": "mass-and-unit-restrictions",
                                        "name": "Mass and unit restrictions",
                                        "description": "Account for mass prefixes being attached to gram rather than kilogram, and verify prefix permissions for other units rather than assuming universal applicability.",
                                        "questions": [
                                            {
                                                "text": "For a mass expression, has scaling been formed from gram rather than by adding a prefix to kilogram?",
                                                "kind": "action",
                                                "id": "mass-and-unit-restrictions-q01"
                                            },
                                            {
                                                "text": "What documented restriction or convention governs prefix use with this particular SI or non-SI unit?",
                                                "kind": "provenance",
                                                "id": "mass-and-unit-restrictions-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "scaling-and-representation",
                        "name": "Scaling and representation",
                        "description": "Operational interpretation of prefixes within quantity expressions.",
                        "rationale": "Correct recognition must lead to correct arithmetic, especially when units are powered or appear in denominators.",
                        "layers": [
                            {
                                "id": "expression-scale",
                                "name": "Expression scale",
                                "description": "Propagation of a prefix factor through the attached unit's algebraic role.",
                                "findings": [
                                    {
                                        "id": "powered-prefix-factor",
                                        "name": "Powered prefix factor",
                                        "description": "Treat a prefix as part of its attached unit: for example, cm² carries a factor of 10^-4 relative to m².",
                                        "questions": [
                                            {
                                                "text": "What exponent applies to the prefixed unit, and therefore what total power of ten does this occurrence contribute?",
                                                "kind": "measurement",
                                                "id": "powered-prefix-factor-q01"
                                            },
                                            {
                                                "text": "In a compound expression, which unit factor carries the prefix, and is that factor multiplied, divided, or raised to a power?",
                                                "kind": "boundary",
                                                "id": "powered-prefix-factor-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "equivalent-representation",
                                "name": "Equivalent representation",
                                "description": "Changing the prefix while preserving the represented quantity.",
                                "findings": [
                                    {
                                        "id": "value-preserving-rescaling",
                                        "name": "Value-preserving rescaling",
                                        "description": "Adjust the numerical value by the exact ratio of prefix factors, considering unit powers and the desired presentation.",
                                        "questions": [
                                            {
                                                "text": "What exact numerical adjustment preserves the quantity when replacing the original prefix with the target prefix?",
                                                "kind": "measurement",
                                                "id": "value-preserving-rescaling-q01"
                                            },
                                            {
                                                "text": "Which valid prefix gives an appropriate presentation under the domain's conventions without implying additional measurement precision?",
                                                "kind": "action",
                                                "id": "value-preserving-rescaling-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "authority-and-interoperability",
                        "name": "Authority and interoperability",
                        "description": "Evidence of SI status and reliable use across documents and software.",
                        "rationale": "An authorised prefix can still be misread or unsupported, and historical material must be interpreted against an identified reference.",
                        "layers": [
                            {
                                "id": "standardisation-evidence",
                                "name": "Standardisation evidence",
                                "description": "Traceable authority for the name-symbol-factor association and its applicability.",
                                "findings": [
                                    {
                                        "id": "verified-si-status",
                                        "name": "Verified SI status",
                                        "description": "Anchor recognition to a source actually consulted, identifying the relevant edition or decision rather than inferring status from common usage.",
                                        "questions": [
                                            {
                                                "text": "Which consulted SI publication or CGPM resolution establishes this prefix's name, symbol, and multiplier?",
                                                "kind": "provenance",
                                                "id": "verified-si-status-q01"
                                            },
                                            {
                                                "text": "Which reference date or edition governs interpretation of the document or system being assessed?",
                                                "kind": "boundary",
                                                "id": "verified-si-status-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "machine-and-human-interpretation",
                                "name": "Machine and human interpretation",
                                "description": "Risks introduced by character handling, parser vocabulary, and contextual ambiguity.",
                                "findings": [
                                    {
                                        "id": "lossless-prefix-exchange",
                                        "name": "Lossless prefix exchange",
                                        "description": "Verify that a receiving system preserves the intended symbol and scale, including case-sensitive distinctions and micro-symbol handling.",
                                        "questions": [
                                            {
                                                "text": "Does the named receiving system recognise this prefix and preserve its exact scale when parsing and serialising the expression?",
                                                "kind": "action",
                                                "id": "lossless-prefix-exchange-q01"
                                            },
                                            {
                                                "text": "Could case folding, character replacement, or confusion with a unit symbol change the interpretation, and what evidence resolves the ambiguity?",
                                                "kind": "boundary",
                                                "id": "lossless-prefix-exchange-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 describes the metrological sense of SI prefix; no separate sense was supplied.",
                                            "Standards and the 2022 extension are recalled, not checked against source documents."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of SI prefix 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": [
                                            "Prefixes for decimal multiples, such as kilo (10³)",
                                            "Prefixes for decimal submultiples, such as milli (10⁻³)"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of SI prefix 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": "SI prefix names and symbols",
                                                "value_or_pattern": "Each prefix pairs a name and case-sensitive symbol with a specified power of ten, such as mega, M, 10⁶, or micro, µ, 10⁻⁶.",
                                                "note": "Symbols are standardized mathematical notation, not abbreviations; case changes can change the factor."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of SI prefix 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": [
                                            "BIPM SI Brochure: defines SI prefixes and rules for writing and combining them with units.",
                                            "General Conference on Weights and Measures (CGPM), Resolution 3 of its 27th meeting (2022): introduced ronna, quetta, ronto and quecto.",
                                            "ISO 80000-1, issued by ISO: gives general rules for quantities, units and their notation."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of SI prefix 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": [
                                            "Expressing large and small measurements conveniently, such as kilometres, milligrams and nanoseconds.",
                                            "Scaling engineering specifications, instrument displays and scientific results.",
                                            "Expressing decimal data quantities and rates, such as megabytes and gigabits per second."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of SI prefix 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": "Multiplicative scale factor",
                                                "typical_range": "Discrete factors from 10⁻³⁰ to 10³⁰; available exponents are ±1, ±2 and multiples of three from ±3 through ±30.",
                                                "unit": "Dimensionless"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of SI prefix 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": [
                                            "Confusing case-sensitive symbols, such as m for milli and M for mega, causes large scaling errors.",
                                            "Treating kilo, mega or giga as powers of two instead of powers of ten creates discrepancies in data quantities.",
                                            "Ignoring that an exponent applies to the prefixed unit gives incorrect area or volume conversions: 1 cm² equals 10⁻⁴ m².",
                                            "Stacking prefixes violates SI rules; mass multiples and submultiples are formed by attaching a prefix to gram, rather than kilogram.",
                                            "Loss or substitution of the micro symbol in transcription or software can obscure a unit and cause scaling errors."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of SI prefix 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": [
                                            "Prefix symbols and factors are internationally standardized; written names can vary with language."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of SI prefix 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": "Unit of measurement",
                                                "difference": "A unit supplies a reference for measuring a quantity; a prefix supplies only a scaling factor and is not used independently."
                                            },
                                            {
                                                "name": "Binary prefix",
                                                "difference": "Binary prefixes such as kibi and mebi denote powers of two; SI prefixes denote powers of ten."
                                            },
                                            {
                                                "name": "Scientific notation",
                                                "difference": "Scientific notation writes an explicit power of ten with a number; an SI prefix incorporates a prescribed power of ten into a unit name or symbol."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of SI prefix this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Which authoritative SI edition and resolutions will be consulted to establish the complete prefix inventory and adoption history?",
                "Which language-specific prefix spellings should be recognised, and which authority governs each spelling?",
                "Which Unicode variants and ASCII substitutions should target systems accept for micro while preserving a canonical representation?",
                "Which unit-specific permissions and restrictions must be included for the intended application, especially for non-SI units?",
                "Which destination parsers and data formats must be checked for prefix coverage, case preservation, and correct handling of powered units?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 17,
                "questions": 25
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "work, medium or creative form",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a SI prefix, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise an SI prefix, interpret its exact decimal scaling, and judge whether its use in a unit expression is valid.",
            "characteristics": {
                "substance": "information",
                "origin": "conceptual",
                "agency": "inert"
            },
            "whatYouCanDoWithIt": [
                "read and interpreted",
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Described in 70 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 SI prefix, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "content that has to be carried by something else",
            "physicalCharacter": [
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "read it and act on what it says",
                "observe it, measure it, record its state"
            ],
            "howItIsRecognised": [
                "What is seen is a copy or a performance, not the work. Recognising the work means recognising the content through whatever is carrying it."
            ],
            "relatedModels": [],
            "standing": "Described in 70 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 SI prefix from another, and a SI prefix 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 SI prefix, 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 SI prefix, 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 SI prefix 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 SI prefix, 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 SI prefix, 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 SI prefix 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 SI prefix 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 SI prefix, 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 SI prefix, 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 SI prefix 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 SI prefix from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a SI prefix, 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 SI prefix, 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 SI prefix 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 SI prefix 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 SI prefix between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a SI prefix, 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 SI prefix, 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 SI prefix 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 SI prefix, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a SI prefix 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 SI prefix, 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 SI prefix, 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 SI prefix is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "content-and-access",
                        "name": "Content, encoding and access",
                        "description": "What a SI prefix says, how it is encoded and who may read it.",
                        "rationale": "An informational thing carries content that can be copied, versioned and withheld, none of which its physical carrier explains.",
                        "layers": [
                            {
                                "id": "content-and-encoding",
                                "name": "Content and encoding",
                                "description": "The content itself, its format and its language.",
                                "findings": [
                                    {
                                        "id": "content-and-format",
                                        "name": "Content, format and language",
                                        "description": "What a SI prefix contains and in what form it is held.",
                                        "questions": [
                                            {
                                                "id": "content-and-format-q01",
                                                "text": "What identifies and describes the content of a SI prefix, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "content-and-format-q02",
                                                "text": "Who or what asserted this about the content of a SI prefix, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "content-and-format-q03",
                                                "text": "What may an agent decide or do once the content of a SI prefix is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "access-and-rights",
                                "name": "Access, rights and retention",
                                "description": "Who may read, copy or change it, and for how long it is kept.",
                                "findings": [
                                    {
                                        "id": "access-rules",
                                        "name": "Access rules and retention",
                                        "description": "The permissions attached to a SI prefix and the period it survives.",
                                        "questions": [
                                            {
                                                "id": "access-rules-q01",
                                                "text": "What identifies and describes access to a SI prefix, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "access-rules-q02",
                                                "text": "Who or what asserted this about access to a SI prefix, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "access-rules-q03",
                                                "text": "What may an agent decide or do once access to a SI prefix is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "work-and-manifestation",
                        "name": "Work, version and copy",
                        "description": "Which level of SI prefix a statement is about.",
                        "rationale": "The work, the edition, the file and the copy in hand are four things; rights and content attach to different ones.",
                        "layers": [
                            {
                                "id": "levels",
                                "name": "Levels of the thing",
                                "description": "Work, expression, manifestation and item, in plain terms.",
                                "findings": [
                                    {
                                        "id": "level-rules",
                                        "name": "What belongs at each level",
                                        "description": "Which facts hold for the work and which only for one copy.",
                                        "questions": [
                                            {
                                                "id": "level-rules-q01",
                                                "text": "For SI prefix, which facts belong to the work itself, which to a version, and which to a single copy?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "level-rules-q02",
                                                "text": "What identifier exists at each level, and which one is being cited?",
                                                "kind": "definition"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "versions",
                                "name": "Versions, editions and variants",
                                "description": "How versions differ and which is canonical to whom.",
                                "findings": [
                                    {
                                        "id": "version-record",
                                        "name": "Versions and canonicity",
                                        "description": "Differences that matter and who calls one authoritative.",
                                        "questions": [
                                            {
                                                "id": "version-record-q01",
                                                "text": "Which versions or editions of SI prefix exist, and how do they differ substantively?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "version-record-q02",
                                                "text": "Who treats which version as authoritative, and for what purpose?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "authorship-and-rights",
                        "name": "Authorship, rights and permitted use",
                        "description": "Who made SI prefix and what may be done with it.",
                        "rationale": "Rights are jurisdictional, time-limited and attached to a level, and an agent that ignores that will copy what it may not.",
                        "layers": [
                            {
                                "id": "authorship",
                                "name": "Authorship and contribution",
                                "description": "Who contributed what, and in what capacity.",
                                "findings": [
                                    {
                                        "id": "contribution-record",
                                        "name": "Contributors and roles",
                                        "description": "The people and bodies behind it, with their roles.",
                                        "questions": [
                                            {
                                                "id": "contribution-record-q01",
                                                "text": "Who authored or contributed to SI prefix, in what roles, and how is that attested?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "contribution-record-q02",
                                                "text": "Where authorship is disputed or anonymous, what is recorded instead?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "rights",
                                "name": "Rights and permissions",
                                "description": "Which rights subsist, where, until when, and what they permit.",
                                "findings": [
                                    {
                                        "id": "rights-record",
                                        "name": "Rights, term and permitted acts",
                                        "description": "The regime in force and what it allows.",
                                        "questions": [
                                            {
                                                "id": "rights-record-q01",
                                                "text": "What rights subsist in SI prefix, in which jurisdictions, and until when?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "rights-record-q02",
                                                "text": "Which acts are permitted without further permission, and which must an agent refuse?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a SI prefix 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 SI prefix and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a SI prefix, 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 SI prefix, 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 SI prefix 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 SI prefix is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a SI prefix, 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 SI prefix, 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 SI prefix 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
            }
        }
    }
}