Status: IN
The GoF's abstract design claims are systematically validated by concrete exemplifications at three distinct levels: SOLID's abstract judgment framework is validated by Command's concrete cross-dimensional role (pattern level), DIP's abstract architectural mechanism is validated by Bridge-Abstract Factory's concrete platform integration (mechanism level), and pattern comprehensiveness is validated by ET++'s near-complete usage of all 23 patterns within a single framework (system level).
Three concrete exemplifications at pattern/mechanism/system levels = systematic validation pattern across the GoF
Depends on (SL): solid-spanning-concretely-exemplified, bridge-af-concretely-instantiates-dip, et-plus-plus-validates-pattern-comprehensiveness