Status: OUT
The composition-based decoupling patterns achieve complete sender-receiver independence across all interaction topologies, with abstract coupling guaranteeing that neither party knows the other's concrete identity.
Full decoupling holds only when Chain's type safety loss and Observer's unexpected update cascades are absent
Depends on (SL): decoupling-topology-composition-based, abstract-coupling-enables-pattern-flexibility
Unless: chain-of-responsibility-type-safety-drawback, gof-observer-unexpected-updates-liability