Status: IN
Bridge and Decorator independently demonstrate that composition prevents combinatorial class explosion: Bridge avoids M×N proliferation from crossed abstraction-implementation hierarchies, while Decorator avoids 2^n subclass combinations from independent embellishments — the same composition principle solving the same structural problem in different pattern categories.
Two patterns independently proving the same composition advantage across structural and behavioral domains
Depends on (SL): bridge-eliminates-class-explosion, decorator-avoids-inheritance-explosion