From Supersymmetric Structures to Second Physics: A Unified State-Based Program

This paper provides a unified synthesis of a six-part research program aimed at extending the particle-centered paradigm of fundamental physics. Building on developments in supersymmetric theory, geometric structures, and nonparticle degrees of freedom, the program culminates in the formulation of Second Physics, a state-based framework in which physical reality is described in termsof structured states rather than isolated propagating particles. The present work revisits the conceptual motivations introduced at the outset of the program and traces their concrete realization across the six companion papers, highlighting their internal coherence, division of roles, and shared ontological commitments.