{"id":"lsp-history-constraint-novel-contribution","text":"The history constraint is Liskov and Wing's novel contribution beyond Meyer's Design by Contract: subtypes may not introduce methods that allow state changes impermissible under the supertype's observable history.","truth_value":"IN","source":"entries/2026/06/17/liskov-substitution-principle.md","source_url":"https://en.wikipedia.org/wiki/Liskov_substitution_principle","source_hash":"","justifications":[],"dependents":["lsp-contractual-completeness","lsp-violation-patterns-reveal-history-constraint"],"metadata":{"last_premise_reviewed":"2026-06-17T18:19:22","premise_review_result":"pass"},"created_at":"2026-06-17T17:04:08+00:00","updated_at":"2026-06-17T17:04:08+00:00","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"lsp-history-constraint-novel-contribution","truth_value":"IN","reason":"premise"}]}}