Status: IN
Composition's convergent evolutionary validation (independent trajectories in both creational patterns and OCP migrating from inheritance to composition) is complemented by its doubly-grounded scalability (four theoretical proofs plus sharing infrastructure): convergence establishes composition as the right paradigm, scalability grounding establishes it works at scale — together providing both directional confidence and practical assurance.
Convergent evolution says composition is right; doubly-grounded scalability says it works at scale
Depends on (SL): convergent-evolution-toward-composition, composition-scalability-doubly-grounded