The Answerability Problem in Quantum Mechanics: Observation, Interpretation, and Structural Closure Under Constraint

Quantum mechanics is extraordinarily successful empirically while its interpretation remains contested. This paper develops interpretive accountability as a philosophy-of-science method for keeping formal, empirical, and ontological claims distinct. The method begins by separating several senses of “observer”: physical interaction, measurement coupling, record formation, information update, and conscious awareness. These layers may participate in one experimental chain but should not be treated as interchangeable. The paper then compares major approaches to the measurement problem according to the problems they address, the additional commitments they introduce, and the questions they leave open. It also distinguishes interpretations from approaches that modify or supplement standard quantum theory, including Bohmian and objective-collapse theories. Decoherence is treated as essential to understanding suppression of interference and the emergence of effectively classical records, but not as a stand-alone solution to the measurement problem. No new measurement dynamics are proposed. The central methodological claim is modest: where multiple empirically viable frameworks remain in contention, philosophical evaluation should state the target problem, formal commitments, empirical discriminants, and unresolved remainder explicitly. This discipline cannot select a final interpretation by itself, but it can reduce category mistakes and prevent intuitive satisfaction from being mistaken for physical closure.