Quantum Mechanics as Unrealized Temporal Capacity: The Microscopic Limit of Emergent Time

Within an emergent-time framework developed in Papers I–IV, physical time is not taken as fundamental but is locally generated through irreversible classical record formation. Mass is interpreted as temporal capacity, gravitation as spatial variation in temporal realization rate, and black holes as saturation limits of temporal realization. This paper situates quantum mechanics as the microscopic limit of unrealized temporal capacity. In the absence of irreversible record formation, coherent quantum systems generate no intrinsic time. Unitary evolution is reinterpreted as bookkeeping over unrealized future possibilities rather than evolution within a pre-existing temporal background. Measurement and decoherence are identified as the physical processes through which temporal structure is locally instantiated by irreversibly fixing classical records. Quantum states are interpreted ontologically as structured catalogs of unrealized futures rather than physical entities evolving in time. This interpretation introduces no new dynamics and modifies no equations of quantum mechanics; its contribution is interpretive rather than formal, clarifying the ontological status of quantum states, measurement, microscopic reversibility, and delayed-choice phenomena within an emergent-time framework.