Status: IN
SRP's actor-based resolution of the Observer-Mediator tradeoff concretely validates the general claim that SOLID grounds pattern judgment: a specific principle with precise semantics (actor identification) resolves a specific inter-pattern choice, demonstrating that SOLID's mutual reinforcement translates into actionable design decisions rather than remaining abstract guidance.
SRP/Observer-Mediator is a concrete instance proving the general SOLID→judgment claim
Depends on (SL): srp-grounds-observer-mediator-decision, solid-grounds-pattern-judgment