Status: OUT
The GoF catalog is simultaneously a formalized variation taxonomy (each pattern captures a specific aspect of design that varies independently, building on Alexander's pattern concept) and a composition-centric paradigm (prescribing composition as the dominant mechanism for managing that variation) — the taxonomy maps the problem space, composition provides the unified solution strategy.
A depth-2 (formalized taxonomy) and depth-3 (composition paradigm) conclusion describe the same catalog from problem-side and solution-side perspectives; their unification reveals the catalog's dual nature
Depends on (SL): variation-taxonomy-culminates-formalization, composition-centric-design-paradigm