{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.mass","code":"thing-q11423","url":"https://ver.cy/models/thing/q11423/","name":"mass","alternateNames":["human body weight","ideal body weight","birth weight","optimum weight in sport","human birth mass","animal birth mass","dry weight","landing weight","wet weight","set-up weight","payload weight","gross weight"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.QLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A property of a physical body measuring its amount of matter and its resistance to acceleration; the SI unit is the kilogram. In everyday use it is often called weight, as in body weight.","purpose":"Let an agent handle mass by measurement, units, uncertainty and context, including body weight, respectfully and without health judgements.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Amount of matter and inertia","Differs from weight as force","Additive quantity","Legal metrology for trade"],"structure":{"bundles":[{"id":"measurement","name":"Measurement","description":"Weighing.","layers":[{"id":"value","name":"Value","description":"Result.","findings":[{"id":"value-finding","name":"Value","description":"Mass value.","questions":[{"text":"What is the mass, in which unit?","kind":"measurement"},{"text":"What is the uncertainty?","kind":"measurement"}]}]},{"id":"instrument","name":"Instrument","description":"Scale.","findings":[{"id":"instrument-finding","name":"Instrument","description":"Instrument.","questions":[{"text":"Which scale was used, and is it calibrated?","kind":"provenance"},{"text":"Is it legal for trade?","kind":"boundary"}]}]}]},{"id":"physics","name":"Physics","description":"Concept.","layers":[{"id":"concept","name":"Concept","description":"Inertia.","findings":[{"id":"concept-finding","name":"Concept","description":"Concept.","questions":[{"text":"Is mass or weight as force meant?","kind":"boundary"},{"text":"How are they related?","kind":"definition"}]}]},{"id":"units","name":"Units","description":"Conversion.","findings":[{"id":"units-finding","name":"Units","description":"Units.","questions":[{"text":"How does this convert between kg and lb?","kind":"measurement"},{"text":"Is precision preserved?","kind":"boundary"}]}]}]},{"id":"body","name":"Body mass","description":"Health context.","layers":[{"id":"health","name":"Health","description":"Guidance.","findings":[{"id":"health-finding","name":"Health","description":"Health guidance.","questions":[{"text":"Is professional guidance needed to interpret this weight?","kind":"boundary"},{"text":"Is judgement avoided?","kind":"boundary"}]}]},{"id":"infants","name":"Infants","description":"Birth weight.","findings":[{"id":"infants-finding","name":"Infants","description":"Birth and infant weight.","questions":[{"text":"How is infant weight tracked against growth charts?","kind":"definition"},{"text":"Who advises parents?","kind":"action"}]}]}]},{"id":"trade","name":"Trade","description":"Legal metrology.","layers":[{"id":"rules","name":"Rules","description":"Measuring instruments.","findings":[{"id":"rules-finding","name":"Rules","description":"Metrology rules.","questions":[{"text":"Which rules apply to weighing for sale?","kind":"provenance"},{"text":"Is the instrument verified?","kind":"provenance"}]}]},{"id":"labels","name":"Labels","description":"Net quantity.","findings":[{"id":"labels-finding","name":"Labels","description":"Net quantity.","questions":[{"text":"Is the declared net mass accurate?","kind":"boundary"},{"text":"What tolerance applies?","kind":"measurement"}]}]}]}]},"agentConduct":{"may":["Measure and report mass with calibrated instruments, stating the unit and uncertainty.","Convert between units of mass correctly."],"mustNot":["Report a mass from an uncalibrated or tampered scale in trade or medicine.","Confuse mass and weight where the difference matters, such as in engineering or dosing.","Comment on or record a person's body weight without their consent.","Shame or judge a person for their body weight."],"requiresHuman":["Using a body weight measurement for a medical or dosing decision."]},"ethics":{"considerations":["Honest measurement protects buyers and patients.","Body weight is sensitive personal data tied to stigma."],"affectedParties":["Buyers and sellers in trade","Patients","People whose weight is recorded"]},"owners":{"steward":"Nobody owns the quantity; national metrology institutes keep the reference standards.","roles":[],"masterSystems":[]},"relations":[{"target":"Q107715","type":"parent","note":"registry parent class"},{"target":"Q117865208","type":"parent","note":"registry parent class"},{"target":"Q141187343","type":"parent","note":"registry parent class"},{"target":"Q141256417","type":"parent","note":"registry parent class"},{"target":"Q181175","type":"parent","note":"registry parent class"},{"target":"Q3386703","type":"parent","note":"registry parent class"},{"target":"physical quantity","type":"related","note":"category"},{"target":"kilogram","type":"related","note":"unit"},{"target":"weight","type":"related","note":"force"},{"target":"density and volume","type":"related","note":"quantities"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.mass","Wikidata: Q11423 (https://www.wikidata.org/wiki/Q11423)","SI base quantity: M dimension symbol"]},"properties":{"applicability":"not-applicable","items":["SI unit: kilogram kg - defined via the Planck constant since 2019"]},"recognition":{"applicability":"optional","items":["Values in kg, g, lb","Scale readings","Weight as force in newtons is a different quantity","Not visible; measured with balances and scales."]},"capabilities":{"applicability":"required","items":["weigh on calibrated scales","convert units","state uncertainty","track body weight with professional guidance"]},"hazards":{"applicability":"required","items":["Confusing mass and weight","Uncalibrated scales","Stigmatising body weight"]},"interfaces":{"applicability":"required","items":["SI Brochure","OIML R 76 non-automatic weighing instruments","EU Measuring Instruments Directive"]},"context":{"applicability":"required","items":["Quantifying matter in science, trade, medicine and engineering.","inertial and gravitational mass","rest mass","body mass","birth mass","mass in trade"]}},"sources":[{"title":"Wikidata item Q11423: mass","url":"https://www.wikidata.org/wiki/Q11423","note":"identity and sense of the item"},{"title":"Wikipedia: Mass","url":"https://en.wikipedia.org/wiki/Mass","note":"general description of the item"}],"openQuestions":["Should body mass be a separate entry?","How should mass and weight be linked?","How should health contexts be routed?"],"resources":{"spec":"/models/things/publications/thing-q11423/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q11423/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T06:57:21Z","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 2026-10-06T19:51:53+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}