{"id":"gof-observer-dangling-reference-on-subject-delete","text":"When a subject is deleted, it must notify observers so they can reset their references; simply deleting observers is unsafe because they may observe other subjects.","truth_value":"IN","source":"entries/2026/06/17/gof-oo-chunk-19.md","source_url":"","source_hash":"","justifications":[],"dependents":["event-architecture-discipline-bounded-by-observer-liabilities","observer-command-event-architecture-production-ready","observer-notification-three-design-decisions"],"metadata":{"last_premise_reviewed":"2026-06-17T18:19:22","premise_review_result":"pass"},"created_at":"2026-06-17T21:30:27+00:00","updated_at":"2026-06-17T21:30:27+00:00","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"gof-observer-dangling-reference-on-subject-delete","truth_value":"IN","reason":"premise"}]}}