century
Let an agent explain centuries, relay counting conventions, naming, historical periodisation and other senses from calendar and historical sources, and distinguish centuries from decades, millennia, eras and centuries in sport or military units.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What a century is.
Definition
Definition.
Definition
Definition.
- What is a century, and how does it differ from decades, millennia, eras and other senses of century? definition
- Is the question about calendars, history, sport or language? boundary
Naming
Naming.
Naming
Naming.
- Why are the 1900s called the 20th century? definition
- Which entry fits the specific century? action
Calendar Counting.
Year zero
No year zero.
Year zero
Year zero.
- Why did the 21st century start in 2001 under the strict convention? measurement
- Which references are standard? provenance
BC and AD
BC and AD centuries.
BC and AD
BC and AD.
- How are centuries counted before and after AD 1? measurement
- Which sources are cited? provenance
History Periodisation.
Long centuries
Long and short centuries.
Long centuries
Long centuries.
- Why do historians speak of the long 19th and short 20th centuries, with views attributed? provenance
- Which entry fits long nineteenth century? action
Millennium
Millennium debate.
Millennium
Millennium.
- What was debated about whether 2000 or 2001 began the new millennium? provenance
- Is the presentation neutral and attributed? boundary
Context Other senses.
Cricket
Cricket century.
Cricket
Cricket.
- What is a century in cricket? provenance
- Which entry fits century (cricket)? action
Rome
Roman centuria.
Rome
Rome.
- What was a Roman century as a military and voting unit? provenance
- Which entry fits centuria? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Cross-cutting context
- Entry kind
- thing
- Plane
- XCT
- Domain
- XCT.TME
What it is Filled
A period of 100 years, in the Gregorian calendar conventionally counted from year 1 to year 100 for the 1st century AD, so that the 21st century runs from 1 January 2001 to 31 December 2100, although popular usage often treats years such as 2000 to 2099 as a century; centuries are named in ordinal form, with the 1900s being the 20th century, and historians sometimes use concepts such as the long 19th century from 1789 to 1914. The word also names groups of 100, such as a cricket score of 100 runs and the Roman centuria.
Why it exists Filled
Let an agent explain centuries, relay counting conventions, naming, historical periodisation and other senses from calendar and historical sources, and distinguish centuries from decades, millennia, eras and centuries in sport or military units.
Distinguishing features Filled
- Hundred-year span
- Ordinal naming
- Counting ambiguity
- Periodisation tool
What robots and AI may and may not do Filled
Must not
- Mix the strict and popular century boundaries in one analysis without saying so.
- Assign undated events or artefacts to a century without evidence.
- Use century labels from one calendar system for another culture without explaining the difference.
Only with a human decision
- Dating archival or archaeological material that others will cite.
May
- Name centuries and their year ranges, stating whether the strict or popular convention is used.
- Convert between ordinal centuries and year ranges, such as the 1900s and the 20th century.
Moral aspects Filled
- Periodisation shapes how history is told and whose calendars count.
Who is affected
- Historians and students
- Cultures using other calendars
Owners Filled
Steward
Nobody owns a century; calendars are held in common.
Links to other meta-models Filled
parent
- Q186081 - registry parent class
- Q5760634 - registry parent class
related
- time interval - in registry terms
- millennium
- century (cricket) - other sense
contains
- decade
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.century
- Wikidata: Q578 (https://www.wikidata.org/wiki/Q578)
Direct properties not applicable Not applicable
- length: 100 years
- 21st century: 2001-2100 years - strict convention
- long 19th century: 1789-1914 note - Hobsbawm, attributed
Plane XCT: no invented physical properties.
Recognition optional Filled
- Period of 100 years
- Century, hundred years
- Decades are 10 years; millennia are 1,000 years; eras are variable; cricket centuries and Roman centuries are other senses
- Not a physical object; a calendar interval.
Capabilities and actions required Filled
- explain counting conventions
- relay naming and periodisation
- describe other senses
- distinguish related periods
Hazards and failure modes required Filled
- Confusing 1900s and 19th century
- Year zero errors
- Treating periodisation as fixed
Standards and interfaces required Filled
- ISO 8601 date representation
- Style guides on century naming
Context of use required Filled
- Organising time in hundred-year periods.
- centuries BC and AD
- long and short centuries in historiography
- centuries in other calendars
Sources Filled
- Wikidata item Q578: century - identity and sense of the item
- Wikipedia: Century - general description of the item
Open questions
- Should individual centuries be linked as instances?
- How should historiographical periodisation be presented?
- Should other senses be disambiguated?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q578/spec.json