The Measurement Problem Dissolved: Why Definite Outcomes Require No Collapse Postulate

The quantum measurement problem—why and how the deterministic, unitary evolution of quantum states gives rise to definite, stochastic outcomes—has remained unresolved since the inception of quantum mechanics. This paper proposes that wave function reduction is not a separate physical process requiring its own postulate, but an instance of Level-0 projection within the Quantum Blueprint Formalism (QBF). The QBF Level-0 framework describes the constrained transition from a pre-coherent space M_s of distinction configurations to a coherence manifold M_Θ of macroscopic order parameters, governed by three admissibility conditions: local compatibility (A1), preserved Heisenberg structure (A2), and bounded compression (A3). We demonstrate that quantum state reduction exhibits the same formal structure: it is a constrained projection from Hilbert space (possibility space) to eigenstate space (actuality space), subject to conditions structurally isomorphic to (A1)–(A3).