A Unified View of Causal Structure from Accessibility

We propose a causality-first framework in which physical observables arise from accumulated structural evolution. The universe is described by a causal structure C, where observable quantities are determined by the evolution of connectivity: δφ ~ ∫ (∂w/∂t) dt Introducing a small external perturbation h as a probe, the leading observable correction takes the form: Δφ = Ah + Bh² with temporal scaling: B(T) ∝ T² This establishes a minimal, falsifiable criterion distinguishing static from dynamically evolving causal structures, without introducing additional particles or fields.