{"id":"bridge-pimpl-demonstrates-dip-at-minimal-scale","text":"Bridge's degenerate Pimpl form (single implementor hidden behind an abstraction boundary) illustrates that abstraction-implementation separation can provide compilation firewall and dependency isolation benefits even without polymorphic variation. Combined with DIP's structured architectural mechanism — which defines formal principles, concrete implementation strategies, and an ownership rule for dependency direction — this suggests that disciplined dependency management through abstraction boundaries has value beyond enabling polymorphic flexibility.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["bridge-pimpl-degenerate-case","dip-complete-architectural-mechanism"],"outlist":[],"label":"Pimpl as degenerate Bridge proves DIP's value persists without polymorphism"}],"dependents":[],"metadata":{"source_type":"derived","review_result":"invalid","repair_action":"softened"},"created_at":"2026-06-18T00:02:15+00:00","updated_at":"2026-06-18T06:35:35+00:00","reviewed_at":"2026-06-18T06:15:08+00:00","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"bridge-pimpl-demonstrates-dip-at-minimal-scale","truth_value":"IN","reason":"SL justification valid","antecedents":["bridge-pimpl-degenerate-case","dip-complete-architectural-mechanism"],"label":"Pimpl as degenerate Bridge proves DIP's value persists without polymorphism"},{"node":"bridge-pimpl-degenerate-case","truth_value":"IN","reason":"premise"},{"node":"dip-complete-architectural-mechanism","truth_value":"IN","reason":"SL justification valid","antecedents":["dip-two-formal-statements","dip-two-implementation-strategies","dip-abstractions-owned-by-higher-layer"],"label":"Three independently specified DIP aspects (definition, strategies, ownership) together form a complete application guide with no gaps"},{"node":"dip-two-formal-statements","truth_value":"IN","reason":"premise"},{"node":"dip-two-implementation-strategies","truth_value":"IN","reason":"premise"},{"node":"dip-abstractions-owned-by-higher-layer","truth_value":"IN","reason":"premise"}]}}