{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.ekkyklema","code":"thing-q1323193","url":"https://ver.cy/models/thing/q1323193/","name":"Ekkyklema","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.PLC"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"An ekkyklema is a movable scenic platform associated with ancient Greek theatre, conventionally understood as being rolled out through a stage-building doorway to reveal a tableau representing an interior scene.","purpose":"Enable an agent to recognise an ekkyklema, assess a proposed or reconstructed theatrical use, and distinguish supported historical features from modern design choices.","scope":{"in":["Identification of the ekkyklema device type and particular reconstructions","Platform, running gear and proposed movement mechanism","Passage between concealed staging space and audience-visible position","Support and presentation of performers, props and tableaux","Evidence supporting historical attributions and reconstruction choices"],"out":["The theatre building and its complete architectural history","The dramatic text and interpretation of the entire play","The mechane and other devices for suspended performer movement","Periaktoi and other scenery-changing devices considered independently","General freight wagons without an ekkyklema staging function"],"boundaries":[]},"distinguishingFeatures":["Its identifying theatrical function is to expose a prepared scene associated with an otherwise concealed interior.","The conventional reconstruction carries the scene on a movable platform; opening a door onto a stationary tableau alone does not identify an ekkyklema.","Its primary presentation involves a supported tableau emerging into view, distinguishing it from a device suspending performers overhead.","A modern stage wagon requires an explicit relationship to the ekkyklema's reveal function or historical reconstruction before being classified under this model.","A proposed identification must distinguish evidence for the device from a scene that could have been staged using several different techniques."],"structure":{"bundles":[{"id":"device-identity","name":"Device identity","description":"Establish what the name denotes in the particular record.","layers":[{"id":"referent-classification","name":"Referent classification","description":"Separate equipment, historical descriptions and modern instances.","findings":[{"id":"ekkyklema-referent","name":"Ekkyklema referent","description":"Record whether the subject is the device type, an attestation or a particular reconstruction.","questions":[{"text":"Does this record describe the ancient device type, a passage mentioning it or an identifiable built platform?","id":"ekkyklema-referent-q01","kind":"definition"},{"text":"What evidence supports correcting PHY.PLC to an equipment classification for vr.tr.ekkyklema?","id":"ekkyklema-referent-q02","kind":"boundary"}]}]},{"id":"neighbouring-stage-devices","name":"Neighbouring stage devices","description":"Test identification against alternative reveal and movement techniques.","findings":[{"id":"identification-tests","name":"Identification tests","description":"Separate the ekkyklema from stationary reveals, scenery devices and generic stage wagons.","questions":[{"text":"What identifies this mechanism as an ekkyklema rather than a door revealing a stationary scene?","id":"identification-tests-q01","kind":"boundary"},{"text":"Which source establishes the relationship between this platform and the historical ekkyklema tradition?","id":"identification-tests-q02","kind":"provenance"}]}]}]},{"id":"historical-evidence","name":"Historical evidence","description":"Track the basis and limits of claims about ancient ekkyklema use.","layers":[{"id":"attestation-context","name":"Attestation context","description":"Locate statements in their date, genre and transmission context.","findings":[{"id":"source-to-claim","name":"Source to claim","description":"Attach each historical assertion to the passage or material evidence that supports it.","questions":[{"text":"Which exact passage or archaeological observation supports the claimed device feature?","id":"source-to-claim-q01","kind":"provenance"},{"text":"Is the source contemporary with the proposed use, a later description or a modern interpretation?","id":"source-to-claim-q02","kind":"provenance"}]}]},{"id":"reconstruction-inference","name":"Reconstruction inference","description":"Keep inferred mechanics separate from direct testimony.","findings":[{"id":"alternative-reconstructions","name":"Alternative reconstructions","description":"Record viable alternatives and the observations that could discriminate between them.","questions":[{"text":"Which features of this reconstruction are attested, inferred from stage geometry or introduced for modern operation?","id":"alternative-reconstructions-q01","kind":"provenance"},{"text":"Could the cited scene be presented without a moving platform, and what evidence favours either interpretation?","id":"alternative-reconstructions-q02","kind":"boundary"}]}]}]},{"id":"platform-and-motion","name":"Platform and motion","description":"Describe how a particular ekkyklema supports and moves its tableau.","layers":[{"id":"tableau-support","name":"Tableau support","description":"Represent the usable deck and the distribution of its staged contents.","findings":[{"id":"loaded-platform","name":"Loaded platform","description":"Assess the platform with the intended performers and scenery in position.","questions":[{"text":"What usable deck dimensions and edge conditions constrain the proposed tableau?","id":"loaded-platform-q01","kind":"measurement"},{"text":"Where are performers and props positioned, and how does their movement change the load distribution?","id":"loaded-platform-q02","kind":"measurement"}]}]},{"id":"movement-mechanism","name":"Movement mechanism","description":"Specify rolling, turning, propulsion and stopping for the proposed instance.","findings":[{"id":"reveal-trajectory","name":"Reveal trajectory","description":"Record the supported movement path without prescribing one universal ancient mechanism.","questions":[{"text":"Does this proposal translate, rotate or combine movements, and what supports that choice?","id":"reveal-trajectory-q01","kind":"definition"},{"text":"How is the loaded platform started, guided, stopped and held at the display position?","id":"reveal-trajectory-q02","kind":"action"}]}]}]},{"id":"stage-and-tableau-interface","name":"Stage and tableau interface","description":"Connect the device to the opening, concealed space and intended audience view.","layers":[{"id":"concealed-to-visible-route","name":"Concealed-to-visible route","description":"Assess the full movement envelope through the proposed stage opening.","findings":[{"id":"opening-and-threshold-fit","name":"Opening and threshold fit","description":"Match loaded geometry and running gear to the route and threshold.","questions":[{"text":"Does the complete tableau clear the opening throughout emergence and withdrawal?","id":"opening-and-threshold-fit-q01","kind":"measurement"},{"text":"What threshold, slope or floor discontinuity affects the proposed rolling path?","id":"opening-and-threshold-fit-q02","kind":"measurement"}]}]},{"id":"dramatic-disclosure","name":"Dramatic disclosure","description":"Relate concealment and display to a specific scene and audience arrangement.","findings":[{"id":"tableau-visibility","name":"Tableau visibility","description":"Identify what must remain hidden and what the reveal must make legible.","questions":[{"text":"What interior scene or offstage consequence is the tableau intended to disclose?","id":"tableau-visibility-q01","kind":"definition"},{"text":"From which audience positions is the tableau concealed before the cue and intelligible after emergence?","id":"tableau-visibility-q02","kind":"measurement"}]}]}]},{"id":"reconstruction-operation","name":"Reconstruction operation","description":"Govern the use of a built ekkyklema for a specified performance.","layers":[{"id":"reveal-sequence","name":"Reveal sequence","description":"Coordinate platform movement, doors, tableau occupants and withdrawal.","findings":[{"id":"cue-and-reset","name":"Cue and reset","description":"Define prerequisites and stop conditions for each part of the reveal.","questions":[{"text":"Which cue authorises emergence after the opening and movement route are clear?","id":"cue-and-reset-q01","kind":"action"},{"text":"How are performers, props and doors coordinated during withdrawal and concealed reset?","id":"cue-and-reset-q02","kind":"action"}]}]},{"id":"loaded-use-assessment","name":"Loaded use assessment","description":"Assess the reconstruction with its actual tableau and stage conditions.","findings":[{"id":"performance-readiness","name":"Performance readiness","description":"Record evidence that the specified reveal can be executed under its intended conditions.","questions":[{"text":"What assessment supports carrying this tableau across the actual threshold and holding it at the display position?","id":"performance-readiness-q01","kind":"provenance"},{"text":"Which changes in performer placement, scenery height or running gear require the reveal to be reassessed?","id":"performance-readiness-q02","kind":"action"}]}]}]},{"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.","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.","questions":[{"text":"Which of these check these first hold for the sense of Ekkyklema this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","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.","questions":[{"text":"Which of these real-world use hold for the sense of Ekkyklema this model covers, and on what evidence?","id":"evidence-real-world-use-q01","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.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of Ekkyklema this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe the ekkyklema and the evidence for its use from classical scholarship.","Separate what ancient sources support from modern reconstructions and staging choices."],"mustNot":["Present a speculative reconstruction of the device as established fact.","Attribute uses of it to specific plays or performances without textual evidence.","Operate a reconstructed stage platform with performers aboard without the venue's safety checks."],"requiresHuman":["Using a working reconstruction in a live performance with actors."]},"ethics":{"considerations":["Ancient theatre is shared heritage; honest scholarship separates evidence from guesswork.","Rolling stage platforms in modern productions carry real risk to performers."],"affectedParties":["Performers and stage crew","Students and audiences","Classical scholars"]},"owners":{"steward":"Nobody owns the concept; a theatre or museum answers for any reconstruction it holds.","roles":[],"masterSystems":[]},"relations":[{"target":"Q607361","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.ekkyklema","Wikidata: Q1323193 (https://www.wikidata.org/wiki/Q1323193)"]},"properties":{"applicability":"required","items":["Referent status: historical device type; textual attestation; hypothetical reconstruction; built reconstruction; modern adaptation","Reveal relationship: concealed scene location, stage opening, visible display position","Loaded movement envelope: metres; platform and tableau width, height, length and swept clearance","Movement configuration: translation; rotation; combined movement; unresolved, with propulsion separately recorded","Tableau load: kilograms and load positions in metres for a specified reconstruction","Reveal state: concealed; prepared; emerging; displayed; withdrawing; immobilised","Historical attribution: claimed period, theatre, dramatic passage and supporting source","Operational readiness: unassessed; rehearsal only; approved for specified tableau; withdrawn from use"]},"recognition":{"applicability":"required","items":["A wheeled low platform rolled out through the central door of a stage building.","Carries a tableau of actors or props revealing an indoor scene."]},"capabilities":{"applicability":"required","items":["Classify a described mechanism as an ekkyklema candidate and record competing identifications.","Compare reconstruction proposals against their textual and architectural evidence.","Check whether a loaded tableau fits its proposed concealed-to-visible route.","Plan and rehearse emergence, display and withdrawal cues for a built reconstruction.","Determine which changes to scenery, performer positions or stage openings require renewed assessment."]},"hazards":{"applicability":"required","items":["Performers falling or being crushed when a rolling platform moves or tips."]},"interfaces":{"applicability":"not-applicable","items":[]},"context":{"applicability":"required","items":["An ekkyklema is encountered in studies of ancient Greek theatre and in modern reconstructions of its staging practices.","It is conventionally understood as a movable platform used to reveal an interior tableau to the audience through a stage-building doorway.","Reconstructed examples support performance and teaching, although their detailed mechanisms reflect interpretations of incomplete historical evidence."]}},"sources":[{"title":"Wikidata item Q1323193: Ekkyklema","url":"https://www.wikidata.org/wiki/Q1323193","note":"identity and sense of the item"},{"title":"Wikipedia: Ekkyklema","url":"https://en.wikipedia.org/wiki/Ekkyklema","note":"general description of the item"}],"openQuestions":["Does the registry's underlying identifier confirm the theatrical device, and what caused its PHY.PLC placement?","Which periods and theatres have sufficiently direct evidence of ekkyklema use, rather than retrospective attribution?","What evidence distinguishes translating, rotating and combined reconstructions, including their proposed propulsion methods?","Which dramatic passages support an ekkyklema interpretation over other ways of revealing an interior scene?","How should ekkyklema and exostra terminology be related without assuming either universal synonymy or a settled mechanical distinction?"],"resources":{"spec":"/models/things/publications/thing-q1323193/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1323193/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T09:26:10Z","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":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"not-applicable","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:25+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.interfaces":"No specific standard, law or official classification applies to the historical scenic device itself independently of a modern reconstruction and its venue."},"score":1.0}}