Reinterpreting Quantum Phenomena via Unitary Retarded Probability Dynamics

This work presents a unified reinterpretation framework for quantum phenomena based on Unitary Retarded Probability Dynamics (URPD). URPD replaces instantaneous time evolution and measurement-induced wavefunction collapse with a structure grounded in temporal delay, informational distance, and probabilistic weighting. Quantum dynamics emerge from retarded probabilistic averaging over informationally separated reference states. Within this framework, standard quantum phenomena—including double-slit interference, the quantum Zeno effect, weak measurement and weak values, quantum entanglement, and effective temporal discreteness—arise naturally without introducing additional axioms. Standard quantum mechanics is recovered as a limiting case where delay fluctuations vanish. URPD preserves relativistic causality by constraining delayed informational contributions and reinterprets the invariance of the speed of light as a consequence of shared informational geometry rather than a fundamental postulate. A more general and foundational formulation of URPD itself is developed in *Classical Science Assumes Instantaneity — and That Assumption Is Wrong*, where the framework is presented in a fully unified form beyond the quantum sector. https://doi.org/10.5281/zenodo.17987215