Principlev1
Version your schemas with dates and track revisions
Version your schemas with dates and track revisions explicitly — visible history of past changes normalizes schema updating and counters cognitive inertia.
Why This Is a Principle
Derives from Belief Perseverance Against Contradictory Evidence (cognitive systems maintain existing beliefs) and Hindsight Bias and Calibration Necessity (memory reconstructs rather than retrieves). The principle prescribes versioning to create external memory of schema evolution. Counters both hindsight bias and persistence bias.