{"id":"command-reversible-prevents-meaningless-undo","text":"The Command pattern's Reversible() method determines at runtime whether a command is worth undoing — for example, a font change to the same font is a no-op that should not consume an undo slot, preventing meaningless undo stacking.","truth_value":"IN","source":"entries/2026/06/17/gof-oo-chunk-6.md","source_url":"","source_hash":"","justifications":[],"dependents":["command-undo-engineering-triad"],"metadata":{"last_premise_reviewed":"2026-06-17T18:19:22","premise_review_result":"pass"},"created_at":"2026-06-17T21:30:28+00:00","updated_at":"2026-06-17T21:30:28+00:00","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"command-reversible-prevents-meaningless-undo","truth_value":"IN","reason":"premise"}]}}