This paper develops a single method, find what an accepted result silently assumed, make it a variable, and prove what follows once it is dropped, and shows it keeps working across domains with nothing in common. Its formal core is the Dynamic Syntactic Invariance Principle: a known static inaccessibility result survives when a system's rules evolve in time, under one sharp necessary condition. A direct cryptographic payoff follows: the secrecy of a rolling-key scheme persists across sessions under a structural update, strengthening a static guarantee from earlier work. The same move is then carried into settings far from each other, special relativity, the reach of a formal theory of physical law, and computable output that is fully meaningful yet indistinguishable from noise to every observer, each established on its own terms, so the recurring structure beneath them is found, not imposed: a distinction real at a full level of description can be invisible at a restricted one. Applied to \textsc{SAT}, this yields a contradiction from which coherence forces $\mathsf{P}\neq\mathsf{NP}$, derived from what standard theory already admits rather than assumed,offered with one reservation, about the proof, not the answer.

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