The formal statement of the cognitive equilibrium requirement: Sₑ ≥ Eₑ(γ), where Sₑ is entity signal construction rate, Eₑ is baseline schema entropy rate, and γ is the environmental acceleration factor. In plain language: to maintain defended posture, an organization must construct entity signals at least as fast as its infrastructure decays, adjusted for how rapidly the competitive and technological environment is changing. Byrum’s Law explains why ‘set and forget’ entity infrastructure fails: in a changing environment (γ > 1), even perfect infrastructure degrades without active maintenance.