{"id": "card_qm_superposition_measurement", "kind": "reference", "title": "Superposition & measurement — the wavefunction and the Born rule", "body": "The state is a superposition of potentials, weighted by the Born rule; measurement actualizes one. Already placed on the capstone (many potentials, one end; the measurement gap). Rests on the capstone.", "source": {"label": "Narrow Highway — quantum mechanics", "url": "", "authority_tier": "engine_derived"}, "shelf": "codex", "box": "quantum_mechanics", "bands": ["quantum mechanics", "pillar", "superposition_measurement", "one map"], "subject": "Superposition & measurement — the wavefunction and the Born rule", "connections": [{"to_card_id": "card_floor_quantum_mechanics", "relationship": "part_of", "evidence": "a foundation of quantum mechanics (Superposition & measurement)"}, {"to_card_id": "card_floor_the_capstone", "relationship": "connects_at", "evidence": "superposition = many potentials; the Born rule and the measurement gap"}], "author": "engine", "created_at": 0.0, "updated_at": 0.0, "visibility": "public", "lifecycle_stage": "public", "volatility": "permanent", "surface": "secular", "generated": false, "call": "codex.quantum.mechanics", "facets": {"subject": ["one map", "pillar", "quantum mechanics", "superposition_measurement"]}, "presentation": {"glyph": "•", "kind_label": "quantum mechanics", "by": "Narrow Highway — quantum mechanics", "authority": "engine_derived", "posted": "", "standing": ""}, "neighbors": [{"id": "card_floor_quantum_mechanics", "title": "Quantum mechanics — the quantum and its limits", "relationship": "part of", "why": "a foundation of quantum mechanics (Superposition & measurement)", "href": "/card/card_floor_quantum_mechanics", "resolved": true}, {"id": "card_floor_the_capstone", "title": "The capstone — one source, many potentials, one end", "relationship": "connects at", "why": "superposition = many potentials; the Born rule and the measurement gap", "href": "/card/card_floor_the_capstone", "resolved": true}], "house": {"door": "FIND", "kind": "card", "trail": "connections", "seal": "/card/card_qm_superposition_measurement", "next_step": {"do": "follow a connection: what this card rests on, and what rests on it", "door": "FIND", "tool": "card_connections", "params": {"id": "card_qm_superposition_measurement"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}