Status: OUT
SOLID's theoretical grounding of the composition paradigm (LSP→DIP→OCP enabling the GoF catalog) combined with composition's validated operation at all three design scales (object, structure, architecture) demonstrates that principled OO design is uniformly composition-based from foundation through practice.
SOLID grounds composition theoretically; three-scale validation confirms it empirically — composition all the way down, grounded all the way up
Depends on (SL): solid-grounds-composition-paradigm, composition-operates-at-three-scales