SYSE.48:4.5 - Revise and consolidate without erasing meaning

When assumptions, primitives or interfaces change, identify the affected edition and supported uses. ME.15 distinguishes Method-semantic changes, implementation editions, variants and retirement. Apply that distinction before relabeling a changed operator as the same result.

Compare apparently overlapping operators on the same supported situations and defeating cases. Consolidate only when the combined implementation preserves their useful distinctions and improves total use. Keep a fallback where the shared implementation cannot preserve a required case.

Withdraw an affected callable edition when its assumptions are defeated. Retain historical evidence and unaffected primitives; direct specialist help may remain available. Update discovery to the supported edition and its limits. Stop at an obtainable, qualified candidate or return the exact missing primitive, meaning or evidence.