Status: IN
The Decorator pattern provides concrete proof of composition's scalability advantage over inheritance: where n independent embellishments require up to 2^n subclasses via inheritance (combinatorial class explosion), Decorator requires only n+1 classes with arbitrary runtime combination — demonstrating that composition superiority is not merely a qualitative design preference but exhibits exponential practical advantage in the dimension of feature combination.
Decorator's avoidance of class explosion quantifies composition's advantage as exponential, not just qualitative
Depends on (SL): decorator-avoids-inheritance-explosion, composition-superiority-for-reuse