Structure Is the Angle Between Physics and Metaphysics

This paper challenges the traditional rivalry between physics and metaphysics by positioning structure as the bisecting constraint space that defines the limits of both domains. Rather than an ontology or a substance, structure is formalized as a non-derivable boundary condition that determines what transitions are possible and where systemic collapse becomes unavoidable. Utilizing the Theory of Axiomatic Necessity (TNA), the author distinguishes between internal dynamical derivation ($N_0$) and exogenous structural ruptures ($N_1$), arguing that history and survival are not the result of local optimization but are contingent upon structural thresholds that cannot be simulated forward. Ultimately, the framework denies the materialist assumption of predictive closure, asserting that reality is globally fragile and intelligible only in retrospect.