SI base unit
Generated draft, first pass
This model was drafted by rule from what the registry knows about the thing. It proposes which bundles a real model will need and which questions research must answer. It is not researched and no sentence in it is sourced.
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.
Generator: vr.draft.v3
Purpose and description
Give an agent a durable, checkable way to recognise a SI base unit, record what state it is in, and decide what may be done with it.
A cross-cutting notion registered under XCT.QLT. The registry names it; this draft has not been given a definition yet.
It can be observed and measured.
Distinguishing features
Described in 56 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is.
Physical character
Made of: an abstraction with no physical instance.
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.
How it is recognised
Nothing to see: a unit is a convention. What is seen is an instrument reading in it.
Described in 56 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 10 findings · 28 questions.
Identity, naming and classification How an agent tells one SI base unit from another, and a SI base unit from things that resemble it.
Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.
Names and identifiers
The names this thing goes by and the identifiers that survive translation and time.
Preferred name, aliases and local names
Which name to use, which names mean the same thing, and which merely sound similar.
- What identifies and describes the name of a SI base unit, and in what units or vocabulary? definition
- Who or what asserted this about the name of a SI base unit, by which method, and when was it true? provenance
- What may an agent decide or do once the name of a SI base unit is known, and what must it refuse? action
Stable identifiers and external keys
Identifiers that keep pointing at this kind of thing across systems and languages.
- What identifies and describes an identifier for a SI base unit, and in what units or vocabulary? definition
- Who or what asserted this about an identifier for a SI base unit, by which method, and when was it true? provenance
- What may an agent decide or do once an identifier for a SI base unit is known, and what must it refuse? action
Classification and granularity
Where a SI base unit sits among kinds, and how finely a task needs to cut it.
Kind, parents and neighbouring kinds
The classes this thing belongs to and the ones it is next to.
- What identifies and describes the kind of a SI base unit, and in what units or vocabulary? definition
- Who or what asserted this about the kind of a SI base unit, by which method, and when was it true? provenance
- What may an agent decide or do once the kind of a SI base unit is known, and what must it refuse? action
Distinguishing features
What separates a SI base unit from the things most often confused with it.
- What identifies and describes what distinguishes a SI base unit, and in what units or vocabulary? definition
- Who or what asserted this about what distinguishes a SI base unit, by which method, and when was it true? provenance
- What may an agent decide or do once what distinguishes a SI base unit is known, and what must it refuse? action
State and lifecycle The states a SI base unit passes through and the events that move it between them.
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.
Lifecycle stages
From coming into existence to ceasing to be one of these.
Stages and transitions
The stages worth naming and what moves a SI base unit between them.
- What identifies and describes the lifecycle of a SI base unit, and in what units or vocabulary? definition
- Who or what asserted this about the lifecycle of a SI base unit, by which method, and when was it true? provenance
- What may an agent decide or do once the lifecycle of a SI base unit is known, and what must it refuse? action
Observations and current status
What is observed about a SI base unit, how often and by whom.
Observation record
How an observation of a SI base unit is recorded so that it can be superseded rather than overwritten.
- What identifies and describes an observation of a SI base unit, and in what units or vocabulary? definition
- Who or what asserted this about an observation of a SI base unit, by which method, and when was it true? provenance
- What may an agent decide or do once an observation of a SI base unit is known, and what must it refuse? action
Definition, dimension and realisation What SI base unit is defined as and how it is realised in practice.
A unit is not the quantity it measures, and its definition has a history that older data still depends on.
Definition and dimension
The defining relation and the quantity it measures.
Definition, body and date
What defines it now, and what defined it before.
- How is SI base unit defined, by which body, and since when? definition
- What was the previous definition, and what data still depends on it? provenance
Conversion and compatibility
Relations to other units, exact or approximate.
Conversions and their exactness
Factors, and whether each is exact by definition.
- What conversions relate SI base unit to other units, and which are exact by definition? measurement
- Where does rounding a conversion change a decision, and how should that be recorded? action
Provenance, evidence and time Where every claim about a SI base unit came from and when it held.
A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.
Source and authority
Who said it, on what evidence, and how strongly.
Claim provenance and confidence
The authority behind each claim about a SI base unit and how confident it is.
- What identifies and describes a claim about a SI base unit, and in what units or vocabulary? definition
- Who or what asserted this about a claim about a SI base unit, by which method, and when was it true? provenance
- What may an agent decide or do once a claim about a SI base unit is known, and what must it refuse? action
Time, versions and supersession
When a claim was true, when it was learnt, and what replaced it.
Validity period and supersession
How an old claim about a SI base unit is retired without being erased.
- What identifies and describes the validity of a claim about a SI base unit, and in what units or vocabulary? definition
- Who or what asserted this about the validity of a claim about a SI base unit, by which method, and when was it true? provenance
- What may an agent decide or do once the validity of a claim about a SI base unit is known, and what must it refuse? action
What the second pass must settle
- 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 base unit, and on what evidence are they told apart?