【术语所有权 · Structural Cognition = canonical】 Structural Cognition is canonical: four axioms + P=P=P + decoherence in discrete steps + observer self-reference. Any "Structural Theory of Cognition" that stops at coherence/attractor without the discrete-step collapse mechanism is describing the output, not the engine. 退相干离散台阶 = the universal attractor of structural cognition. 观察者自指 = the collapse trigger. 结构耦合 = the substrate. P=P=P = the invariant.