Status: IN
The GoF's design knowledge achieves convergent validation from two independent directions: bottom-up, the knowledge system is substantiated by progressively scaled empirical evidence (MVC three-pattern → Lexi eight-pattern → ET++ near-complete 23-pattern usage); top-down, the complete practitioner system (SOLID governance + cataloged patterns + judgment pipeline) is validated by Lexi's concrete demonstration of both behavioral subsystems operating in integrated application design — progressive evidence building toward the same practitioner system that top-down analysis identifies as complete.
Progressive empirical evidence (bottom-up) converges with subsystem validation (top-down) on the same knowledge system
Depends on (SL): design-knowledge-substantiated-by-progressive-evidence, practitioner-system-empirically-validated-across-subsystems