Time as a Stack: Geometry, Branching, and the Non-Uniqueness of Time

This work introduces the Time Stack: a geometric framework in which time is not a universal axis but an emergent, branch-dependent object defined only where admissibility survives. By treating time as a structure that can split, collapse, and re-enter, the Time Stack explains a wide range of real-world discontinuities—from sudden insight and collective behavioral flips to catastrophic failures, déjà vu, improbable coincidences, and history-defining global transitions. Built on the hierarchy that admissibility creates time and time enables dynamics, this monograph unifies physical systems, cognition, markets, and hazard environments under a single principle. It is a foundational, first-principles reflection written to clarify the mathematical and philosophical implications of non-unique temporal evolution.