Readable History Produces Collapse — Kasei-Theory, Physics III

This paper develops a third extension of Kasei-Theory in relation to physics. Physics I introduced the phase structure latent → dec → col, and Physics II examined the readable regime in which stabilized readout fixes the universe as readable configuration. The present work considers the structural consequences of readable history. The central claim is that readable structure is structurally limited. Readout fixes configuration, and each fixation constrains subsequent continuation. Readable history therefore accumulates structural confinement. With the accumulation of confinement, the stability of readable continuation decreases. Beyond a certain threshold, configurations can no longer maintain coherent readability. This structural threshold is referred to as collapse density. Collapse does not signify the destruction of configuration. Rather, it marks the limit at which readable coherence can no longer be sustained. This paper does not replace physical theory or identify collapse with a specific empirical phenomenon, but fixes the structural condition under which the readable regime marks the limit of its continuation.