{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.duration","code":"thing-duration","url":"https://ver.cy/models/thing/duration/","name":"duration","alternateNames":["attention span","continuance","clocking","longueur","residence time","span","stretch","stint","time scale","extended time scale","slow time scale","fast time scale"],"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":"In the WordNet sense, the length of time during which something continues, a period measured between a start and an end, with related terms the registry aliases name such as span and continuance, longueur, a tedious passage, residence time, the average time a substance spends in a system, attention span, and clocking; duration is measured in time units and appears across physics, chemistry, psychology and everyday life, and it should be distinguished from a point in time and from frequency. Perceived duration can differ from clock duration, a topic in psychology.","purpose":"Let an agent explain duration, relay measurement and related concepts such as residence time and attention span from general and scientific sources, describe the named terms, and distinguish duration from a point in time, frequency, tempo and latency.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Interval length","Start-to-end","Cross-domain","Perceived versus clock"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What duration is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is duration, and how does it differ from a point in time, frequency, tempo and latency?","kind":"definition"},{"text":"Is the question about physics, psychology or everyday timekeeping?","kind":"boundary"}]}]},{"id":"terms","name":"Terms","description":"Named terms.","findings":[{"id":"terms-finding","name":"Terms","description":"Terms.","questions":[{"text":"What are span, continuance, residence time, attention span and longueur?","kind":"definition"},{"text":"Which entry fits the specific term?","kind":"action"}]}]}]},{"id":"measurement","name":"Measurement","description":"Measurement.","layers":[{"id":"units","name":"Units","description":"Time units.","findings":[{"id":"units-finding","name":"Units","description":"Units.","questions":[{"text":"How is duration measured in time units?","kind":"measurement"},{"text":"Which entry fits time unit?","kind":"action"}]}]},{"id":"iso","name":"ISO","description":"ISO 8601 durations.","findings":[{"id":"iso-finding","name":"ISO","description":"ISO.","questions":[{"text":"How does ISO 8601 express durations?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]},{"id":"science","name":"Science","description":"Scientific uses.","layers":[{"id":"residence","name":"Residence time","description":"Residence time.","findings":[{"id":"residence-finding","name":"Residence time","description":"Residence time.","questions":[{"text":"What is residence time in chemistry and environmental science?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]},{"id":"perceived","name":"Perceived","description":"Perceived duration.","findings":[{"id":"perceived-finding","name":"Perceived","description":"Perceived.","questions":[{"text":"How can perceived duration differ from clock time, as psychology reports?","kind":"provenance"},{"text":"Is the presentation neutral and attributed?","kind":"boundary"}]}]}]},{"id":"context","name":"Context","description":"Everyday.","layers":[{"id":"attention","name":"Attention span","description":"Attention span.","findings":[{"id":"attention-finding","name":"Attention span","description":"Attention span.","questions":[{"text":"What does attention span mean, and how is it studied?","kind":"provenance"},{"text":"Which entry fits attention span?","kind":"action"}]}]},{"id":"longueur","name":"Longueur","description":"Longueur.","findings":[{"id":"longueur-finding","name":"Longueur","description":"Longueur.","questions":[{"text":"What is a longueur in the arts?","kind":"provenance"},{"text":"Is the information accurate?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["Measure and report a duration with a start, an end and units.","Distinguish measured duration from perceived duration."],"mustNot":["Confuse a duration with a point in time.","Report durations without units or with the wrong unit.","Misrepresent how long a person worked, waited or was held to their disadvantage.","Use attention span figures to make claims about a person without evidence."],"requiresHuman":["Using recorded durations to decide pay, sanctions or detention."]},"ethics":{"considerations":["Recorded durations decide wages, sentences and waiting lists.","People's experience of time is subjective and should be respected."],"affectedParties":["Workers","Patients on waiting lists","Detained people"]},"owners":{"steward":"Nobody owns the concept; whoever records a duration answers for its accuracy.","roles":[],"masterSystems":[]},"relations":[{"target":"oewn-15137796-n","type":"parent","note":"registry parent class"},{"target":"time period","type":"related","note":"in WordNet terms"},{"target":"time unit","type":"related"},{"target":"point (time)","type":"related"},{"target":"frequency","type":"related"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.duration","Open English WordNet: oewn-15158573-n","WordNet: oewn-15137796-n hypernym of duration"]},"properties":{"applicability":"not-applicable","items":["measured in: time units note","residence time: average time in a system note","WordNet hypernym: time period note"]},"recognition":{"applicability":"optional","items":["Length of time something continues","Attention span, continuance, clocking, longueur, residence time, span","A point in time is an instant; frequency is per unit time; tempo is musical pace; latency is delay before response","Not a physical object; an interval of time."]},"capabilities":{"applicability":"required","items":["explain the concept","relay measurement","describe named terms","distinguish related concepts"]},"hazards":{"applicability":"required","items":["Confusing duration and instant","Confusing perceived and measured duration","Unit errors"]},"interfaces":{"applicability":"required","items":["ISO 8601 duration format"]},"context":{"applicability":"required","items":["The length of time something continues.","physical durations","residence time","attention span","perceived duration"]}},"sources":[{"title":"Open English WordNet 2024, synset oewn-15158573-n","url":"https://en-word.net/id/oewn-15158573-n","note":"sense and gloss of the concept"},{"title":"Wiktionary: duration","url":"https://en.wiktionary.org/wiki/duration","note":"word senses and usage"}],"openQuestions":["Should residence time be a separate entry?","How should perceived duration be linked to psychology?","How should ISO 8601 durations be linked?"],"resources":{"spec":"/models/things/publications/thing-duration/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-duration/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-14T02:10:50Z","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}}