{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.era","code":"thing-era","url":"https://ver.cy/models/thing/era/","name":"era","alternateNames":["epoch","antiquity","golden age","historic period","age","modern era","information age","reign","turn of the century","literary period"],"kind":"thing","status":"published","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"noun.time","plane":"XCT","domain":["XCT.TME"],"industry":[],"navPath":"","tags":[],"facets":{"substance":"abstract","origin":"conceptual","agency":"inert","mobility":"not-applicable","scale":"not-applicable","affordances":["observable"]}},"whatItIs":"A long and distinct period of time, either one marked by a distinctive character or one reckoned from a fixed point or event; in everyday use an era is a stretch of history seen as a unit, such as an age, an epoch or a golden age, while in geology and dating systems it has more precise meanings. The registry aliases name related terms including epoch, antiquity, age, historic period and modern era.","purpose":"Let an agent explain what an era is, relay its everyday and technical senses from reference sources, distinguish the aliases such as epoch and age, and steer a question to the intended sense.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["A long span","Treated as a unit","Distinctive character or fixed start","Multiple senses"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What an era is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is an era, and how does it differ from a moment or a single date?","kind":"definition"},{"text":"Which sense is meant, everyday or technical?","kind":"boundary"}]}]},{"id":"related","name":"Related","description":"Related terms.","findings":[{"id":"related-finding","name":"Related","description":"Related.","questions":[{"text":"How does an era differ from an epoch and an age?","kind":"definition"},{"text":"Which entry fits the intended term?","kind":"action"}]}]}]},{"id":"senses","name":"Senses","description":"Senses.","layers":[{"id":"everyday","name":"Everyday","description":"Everyday sense.","findings":[{"id":"everyday-finding","name":"Everyday","description":"Everyday.","questions":[{"text":"How is era used to mean a distinctive stretch of history?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"technical","name":"Technical","description":"Technical senses.","findings":[{"id":"technical-finding","name":"Technical","description":"Technical.","questions":[{"text":"What does era mean in geology and calendar systems?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"use","name":"Use","description":"Use.","layers":[{"id":"history","name":"History","description":"Historical eras.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How are historical eras named and bounded?","kind":"provenance"},{"text":"How is an era measured or dated?","kind":"measurement"}]}]},{"id":"golden","name":"Golden","description":"Golden age.","findings":[{"id":"golden-finding","name":"Golden","description":"Golden.","questions":[{"text":"What is meant by a golden age as a kind of era?","kind":"provenance"},{"text":"Is the presentation neutral?","kind":"boundary"}]}]}]},{"id":"context","name":"Context","description":"Context.","layers":[{"id":"boundaries","name":"Boundaries","description":"Boundaries.","findings":[{"id":"boundaries-finding","name":"Boundaries","description":"Boundaries.","questions":[{"text":"How are the start and end of an era decided?","kind":"provenance"},{"text":"Is the boundary contested?","kind":"boundary"}]}]},{"id":"scale","name":"Scale","description":"Scale.","findings":[{"id":"scale-finding","name":"Scale","description":"Scale.","questions":[{"text":"How does an era compare in length to other time periods?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain eras in general and technical senses, with their start points.","Distinguish an era from an epoch, age or single event."],"mustNot":["Present a calendar era of one tradition as universal.","Use era labels to rank cultures as advanced or backward.","Mix everyday and geological senses in answers.","Convert dates between eras without checking the conversion."],"requiresHuman":["Choosing an era system for official documents in a multicultural context."]},"ethics":{"considerations":["Era names carry religious and political meaning, as with BC and BCE.","Dating errors corrupt records."],"affectedParties":["Readers","Historians","Communities using different calendars"]},"owners":{"steward":"Nobody: a concept held in common.","roles":[],"masterSystems":[]},"relations":[{"target":"oewn-15137796-n","type":"parent","note":"registry parent class"},{"target":"time period","type":"related","note":"in registry terms"},{"target":"epoch","type":"related"},{"target":"age","type":"related"},{"target":"moment","type":"related"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.era","Open English WordNet: oewn-15273375-n","WordNet: oewn-15137796-n hypernym of era"]},"properties":{"applicability":"not-applicable","items":["kind: period of time note","senses: everyday, geological, dating list","registry parent: time period note - WordNet hypernym"]},"recognition":{"applicability":"optional","items":["A distinct long period of time","Epoch, antiquity, age, historic period, modern era","A moment is instantaneous; a date is a single point; an age may be looser than an era","Not a visible object; a span of time treated as a unit."]},"capabilities":{"applicability":"required","items":["explain the senses","relay everyday and technical uses","distinguish related terms","steer to the intended sense"]},"hazards":{"applicability":"required","items":["Mixing everyday and technical senses","Confusing era with a single date","Overstating precision"]},"interfaces":{"applicability":"required","items":["Dating and geological conventions"]},"context":{"applicability":"required","items":["Naming a distinct long period of time.","historical era","geological era","calendar era"]}},"sources":[{"title":"Open English WordNet 2024, synset oewn-15273375-n","url":"https://en-word.net/id/oewn-15273375-n","note":"sense and gloss of the concept"},{"title":"Wiktionary: era","url":"https://en.wiktionary.org/wiki/era","note":"word senses and usage"}],"openQuestions":["Should technical senses be separate entries?","How should era relate to epoch and age?","How should the sense be signposted?"],"resources":{"spec":"/models/things/publications/thing-era/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-era/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-14T03:33:12Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T12:16:27+00:00: completeness 1.00; sense: WordNet gloss; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}