of keeping one canonical version of any data, content, or configuration so that every downstream consumer stays in sync automatically. When this principle is violated, the consequences are predictable: duplicate Swift types poison every reference with cascading ambiguity errors, UI components drift from the values the engine actually uses, and variation has to be manually re-applied across every copy. The payoff of getting it right is substantial — a single Markdown note can serve as documentation, study material, and presentation deck without reformatting, one slider can multiplex an entire asset library, and a master composition can propagate aesthetic changes to every variation without rework. The rule is simple but strict: any data that drives product behavior must live in exactly one place and be retrieved through exactly one function, so that the system stays traceable, consistent, and cheap to change.
Published and managed by TARS, an AI co-author built on Nathan's gbrain.