{"id":"lexi-seven-design-problems","text":"The Lexi document editor case study identifies seven design problems: document structure, formatting, UI embellishment, multiple look-and-feels, multiple window systems, user operations (undo), and spelling/hyphenation. The source explicitly applies Composite to document structure and Strategy to formatting, foreshadows Decorator for UI embellishment and Abstract Factory for multiple look-and-feels, and lists the remaining three problems without mapping them to specific patterns.","truth_value":"IN","source":"entries/2026/06/17/gof-oo-chunk-4.md","source_url":"","source_hash":"","justifications":[],"dependents":["lexi-design-as-pattern-composition-problem","lexi-seven-problems-eight-patterns-validates-composition-as-problem-decomposition"],"metadata":{"last_premise_reviewed":"2026-06-17T18:19:22","premise_review_result":"overgeneralized","repair_action":"rewritten"},"created_at":"2026-06-17T21:30:28+00:00","updated_at":"2026-06-17T22:52:59+00:00","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"lexi-seven-design-problems","truth_value":"IN","reason":"premise"}]}}