Current introduction: Files_50a/50b — Prime Quadruplet Naturalization and Unified Harmonic System. Legacy notice: This page preserves an earlier source version of the 490d Unified Chronology repository. The current public-clean canonical repository is the 490d Unified Chronology Knowledge Catalog. For the current file index, use File Index — Landing Pages. For canonical raw Markdown sources, use … Continue reading File_50b: The Prime Quadruplet Chronology — Unified Harmonic System (v4.0)