{"id":"facade-mediator-centralization-spectrum","text":"Facade and Mediator represent a spectrum of centralized coordination patterns distinguished by directionality: Facade provides unidirectional simplification (clients access subsystem through a simplified interface, subsystem unaware of Facade), while Mediator provides multidirectional coordination (colleagues communicate through mediator, mediator aware of all colleagues) — both centralize control but at different coupling costs and for different interaction topologies.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["facade-asymmetric-subsystem-simplification","mediator-vs-facade-directionality"],"outlist":[],"label":"Facade and Mediator both centralize but along a spectrum from one-directional simplification to multi-directional coordination"}],"dependents":["srp-governs-full-centralization-spectrum"],"metadata":{"source_type":"derived","review_result":"pass"},"created_at":"2026-06-18T01:19:55+00:00","updated_at":"2026-06-18T06:15:08+00:00","reviewed_at":"2026-06-18T06:15:08+00:00","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"facade-mediator-centralization-spectrum","truth_value":"IN","reason":"SL justification valid","antecedents":["facade-asymmetric-subsystem-simplification","mediator-vs-facade-directionality"],"label":"Facade and Mediator both centralize but along a spectrum from one-directional simplification to multi-directional coordination"},{"node":"facade-asymmetric-subsystem-simplification","truth_value":"IN","reason":"SL justification valid","antecedents":["facade-often-singleton","facade-subsystem-unaware-of-facade"],"label":"One-way dependency with singleton uniqueness establishes asymmetric simplification"},{"node":"facade-often-singleton","truth_value":"IN","reason":"premise"},{"node":"facade-subsystem-unaware-of-facade","truth_value":"IN","reason":"premise"},{"node":"mediator-vs-facade-directionality","truth_value":"IN","reason":"premise"}]}}