{"id":"gof-observer-unexpected-updates-liability","text":"A liability of the Observer pattern is unexpected updates: observers have no knowledge of each other's presence, so a seemingly innocuous subject change can cause a cascade of updates to observers and their dependents.","truth_value":"IN","source":"entries/2026/06/17/gof-oo-chunk-19.md","source_url":"","source_hash":"","justifications":[],"dependents":["behavioral-modification-taxonomy-reliable","bidirectional-temporal-safety-operational","changemanager-resolves-observer-liability-via-pattern-composition","command-exemplar-reliably-persistent","complete-decoupling-via-composition","coupling-management-complete-two-dimensions","depth-19-reuse-pedagogy-safely-introduces-temporal-precision","depth-20-mvc-validates-jointly-governed-behavioral-subsystems","event-architecture-discipline-bounded-by-observer-liabilities","event-architecture-engineering-reliable","event-architecture-safely-persistent","lexi-pattern-composition-reliably-applicable","mvc-robust-composition-architecture","observer-command-event-architecture-production-ready","observer-composition-reliability-bounded","observer-mediator-complete-communication","observer-mediator-distribution-centralization-tradeoff","observer-principled-composition-reliably-applicable","observer-reliable-notification-system","temporal-and-recursive-governance-safely-integrated","temporal-consistency-reliable-unless-observer-cascades","temporal-precision-safely-operational","temporal-safety-reliably-delivered"],"metadata":{"last_premise_reviewed":"2026-06-17T18:19:22","premise_review_result":"pass"},"created_at":"2026-06-17T17:04:08+00:00","updated_at":"2026-06-17T17:04:08+00:00","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"gof-observer-unexpected-updates-liability","truth_value":"IN","reason":"premise"}]}}