Universal Degenerate-Mobility Scaling in Crowded Soft Matter

Following directly from the Event Density Ontology, this paper reports that a single, universal degenerate‑mobility law accurately describes how diffusion slows in crowded soft‑matter systems. By fitting this form to published data for 10 chemically distinct materials—colloids, proteins, polymers, polysaccharides, and small molecules—the study shows that all exhibit the same concentration‑dependent structure, with no exceptions and R^2 values above 0.986. The law emerges from ED’s constitutive architecture rather than material‑specific physics, and it predicts a striking experimental consequence: sub‑Fickian front propagation with sharp, compact‑support recovery profiles. A decisive, zero‑free‑parameter test is proposed using FRAP on concentrated BSA, where the predicted front‑growth exponent (~0.16) differs from the classical Fickian value (0.50) by a factor of three, making the universality claim directly falsifiable in a single afternoon experiment.