Identity Propagation in the Scalar Drag Emergence Framework develops a substrate-native mechanical explanation for how coherent structures maintain identity while moving through the SDEF substrate. Instead of treating motion as the translation of a fixed object, the paper shows that packets propagate by continual internal renewal. A dynamically maintained leading reconstruction front rebuilds coherence ahead of motion, while a trailing recovery region dissipates fatigue and restores ancestry support behind it. This renewal cycle is governed by the temporal admission limit, the substrate’s intrinsic bound on how quickly local updates can be admitted without inducing decoherence. From this constraint, the paper derives structural consequences: a finite renewal corridor, a minimum identity depth, an upper bound on propagation speed, and the emergence of anisotropic packet geometry. The work demonstrates that identity is not a static configuration but a process property—a stable attractor in the space of admissible substrate evolutions. It explains why packets have finite thickness, why they cannot propagate arbitrarily fast, why they reshape adaptively during motion, and why spectral broadening and intermittency naturally arise. By grounding identity persistence in substrate‑native mechanics rather than phenomenological assumptions, the paper completes the conceptual bridge between the temporal admission limit and the internal dynamics of coherent packet propagation. It establishes the renewal‑corridor mechanism as a foundational component of SDEF and sets the stage for cosmological‑scale consequences such as anisotropy, decoherence thresholds, and birefringence.
Pej Evan Bartolo (Tue,) studied this question.