{"id":"composition-quadruply-evidenced","text":"Composition's scalability advantage over inheritance is supported by converging evidence across theory and practice: OCP's historical evolution from inheritance to abstraction provides theoretical validation (the OO community's own principle revision converged on composition), while Decorator's quantitative proof (n embellishments requiring 2^n subclasses vs. n+1 decorators) and Bridge's independent prevention of M×N class proliferation provide empirical validation across structural pattern categories.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["composition-paradigm-doubly-validated","dual-proof-composition-prevents-explosion"],"outlist":[],"label":"Two independent double-evidence chains (theoretical+practical and structural+structural) merge into four-point convergence for composition superiority"}],"dependents":["composition-scalability-doubly-grounded"],"metadata":{"source_type":"derived","review_result":"invalid","repair_action":"softened"},"created_at":"2026-06-17T23:16:43+00:00","updated_at":"2026-06-18T06:37:41+00:00","reviewed_at":"2026-06-18T06:15:08+00:00","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"composition-quadruply-evidenced","truth_value":"IN","reason":"SL justification valid","antecedents":["composition-paradigm-doubly-validated","dual-proof-composition-prevents-explosion"],"label":"Two independent double-evidence chains (theoretical+practical and structural+structural) merge into four-point convergence for composition superiority"},{"node":"composition-paradigm-doubly-validated","truth_value":"IN","reason":"SL justification valid","antecedents":["ocp-evolution-validates-composition-shift","decorator-proves-composition-scalability"],"label":"Independent theoretical (principle evolution) and empirical (quantitative measurement) convergence on composition"},{"node":"ocp-evolution-validates-composition-shift","truth_value":"IN","reason":"SL justification valid","antecedents":["ocp-evolved-from-inheritance-to-abstraction","composition-superiority-for-reuse"],"label":"OCP's own history recapitulates the broader paradigm shift — convergent validation from principle and practice"},{"node":"ocp-evolved-from-inheritance-to-abstraction","truth_value":"IN","reason":"SL justification valid","antecedents":["ocp-coined-by-meyer-1988","ocp-meyer-vs-polymorphic-interpretation","ocp-polymorphic-version-is-dominant-modern-interpretation"],"label":"OCP's evolution from concrete inheritance to abstract polymorphism parallels and foreshadows the GoF's composition-over-inheritance principle"},{"node":"ocp-coined-by-meyer-1988","truth_value":"IN","reason":"premise"},{"node":"ocp-meyer-vs-polymorphic-interpretation","truth_value":"IN","reason":"premise"},{"node":"ocp-polymorphic-version-is-dominant-modern-interpretation","truth_value":"IN","reason":"premise"},{"node":"composition-superiority-for-reuse","truth_value":"IN","reason":"SL justification valid","antecedents":["favor-composition-over-inheritance","inheritance-breaks-encapsulation","inheritance-compile-time-composition-run-time","delegation-composition-as-powerful-as-inheritance"],"label":"Four independent arguments converge on composition's superiority over inheritance"},{"node":"favor-composition-over-inheritance","truth_value":"IN","reason":"premise"},{"node":"inheritance-breaks-encapsulation","truth_value":"IN","reason":"premise"},{"node":"inheritance-compile-time-composition-run-time","truth_value":"IN","reason":"premise"},{"node":"delegation-composition-as-powerful-as-inheritance","truth_value":"IN","reason":"premise"},{"node":"decorator-proves-composition-scalability","truth_value":"IN","reason":"SL justification valid","antecedents":["decorator-avoids-inheritance-explosion","composition-superiority-for-reuse"],"label":"Decorator's avoidance of class explosion quantifies composition's advantage as exponential, not just qualitative"},{"node":"decorator-avoids-inheritance-explosion","truth_value":"IN","reason":"premise"},{"node":"dual-proof-composition-prevents-explosion","truth_value":"IN","reason":"SL justification valid","antecedents":["decorator-proves-composition-scalability","bridge-eliminates-class-explosion"],"label":"Two independent quantitative proofs of composition's advantage across different GoF categories"},{"node":"bridge-eliminates-class-explosion","truth_value":"IN","reason":"premise"}]}}