Observer-Dependent Realism: A Reply to Objections on Objectivity, the Observer, Testability, and Causation in Observer-Dependent Physics — Overview

ODTOE as observer-dependent realism: reality is objective at the level of an intersubjective fixed point, and objectivity is reconstructed as the limit of high coherence. A conditional reply to five objections — hidden idealism, the undefined observer, untestability, causation, and the observability ceiling — via the corpus's existence/uniqueness theorems for the self-observation fixed point, an explicit operator algebra, and an instrument-level protocol for measuring B.