{"id":"variation-and-composition-unified-catalog","text":"The GoF catalog is simultaneously a formalized variation taxonomy (each pattern captures a specific aspect of design that varies independently, building on Alexander's pattern concept) and a composition-centric paradigm (prescribing composition as the dominant mechanism for managing that variation) — the taxonomy maps the problem space, composition provides the unified solution strategy.","truth_value":"OUT","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["variation-taxonomy-culminates-formalization","composition-centric-design-paradigm"],"outlist":[],"label":"A depth-2 (formalized taxonomy) and depth-3 (composition paradigm) conclusion describe the same catalog from problem-side and solution-side perspectives; their unification reveals the catalog's dual nature"}],"dependents":["design-as-systematic-variation-management","variation-comprehensive-with-axis-escape"],"metadata":{"source_type":"derived","review_result":"pass"},"created_at":"2026-06-17T18:38:48+00:00","updated_at":"2026-06-17T20:39:50+00:00","reviewed_at":"2026-06-17T20:39:50+00:00","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"variation-and-composition-unified-catalog","truth_value":"OUT","reason":"SL justification invalid","failed_antecedents":["composition-centric-design-paradigm"],"label":"A depth-2 (formalized taxonomy) and depth-3 (composition paradigm) conclusion describe the same catalog from problem-side and solution-side perspectives; their unification reveals the catalog's dual nature"}]}}