Experimental Tests of Future-Boundary Influence in the Two-State Vector Formalism: Quantum, Geological, and Classical-Memory Protocols

The asymmetry of causation, according to which physical influences propagate from past events to future events, remains deeply embedded in scientific reasoning. Time-symmetric formulations of quantum mechanics, including the Two-State Vector Formalism (TSVF), challenge the assumption that initial conditions alone provide a complete description of physical systems. Motivated by TSVF and by broader retrocausal interpretations, this paper proposes three falsifiable protocols for testing possible future-boundary influence. Experiment 1 investigates whether weak-measurement records exhibit statistically significant correlations with later postselection conditions in a delayed-choice optical architecture. Experiment 2 evaluates geological asymmetry using impact, extinction, geomagnetic, and large-igneous-province datasets through a predefined correlation-asymmetry statistic near a hypothesized 36 Myr lag. The geological protocol is subject to intrinsic power limitations, as the Phanerozoic record contains only approximately fifteen cycles of the hypothesized 36 Myr period. Experiment 3 examines whether protected classical memory records remain independent of a later quantum-random decision, thereby establishing upper bounds on any putative retrocausal extension beyond standard laboratory TSVF applications. The paper does not claim that retrocausality has been demonstrated; it formulates quantitative null hypotheses, significance criteria, replication requirements, and upper-bound methodologies.