{"id":"append-only-semantics-span-storage-and-streaming","text":"Both versioned storage (S3 version lists, GDrive version histories) and stream processing (finalized aggregation windows) use append-only semantics where history is never overwritten or retracted, ensuring complete audit trails and preventing any form of historical revision — a cross-cutting pattern spanning both persistence and computation.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[{"type":"SL","antecedents":["append-only-versioning-makes-restore-non-destructive","watermark-finalization-is-irreversible"],"outlist":[],"label":"Storage and streaming independently converge on append-only/no-retraction semantics for the same underlying reason: preventing historical revision"}],"dependents":["deletion-is-append-only-across-all-contexts"],"metadata":{"last_reviewed":"2026-06-06T06:26:57","review_result":"pass"},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"append-only-semantics-span-storage-and-streaming","truth_value":"IN","reason":"SL justification valid","antecedents":["append-only-versioning-makes-restore-non-destructive","watermark-finalization-is-irreversible"],"label":"Storage and streaming independently converge on append-only/no-retraction semantics for the same underlying reason: preventing historical revision"},{"node":"append-only-versioning-makes-restore-non-destructive","truth_value":"IN","reason":"SL justification valid","antecedents":["s3-version-list-append-only","gdrive-restore-creates-new-version"],"label":"Append-only version lists make restore a forward operation, not a rollback"},{"node":"s3-version-list-append-only","truth_value":"IN","reason":"premise"},{"node":"gdrive-restore-creates-new-version","truth_value":"IN","reason":"premise"},{"node":"watermark-finalization-is-irreversible","truth_value":"IN","reason":"SL justification valid","antecedents":["watermark-drives-finalization","window-lifecycle-one-directional","no-window-merging-or-retraction"],"label":"Three properties compose into hard irreversibility: watermark-only trigger + one-way lifecycle + no retraction"},{"node":"watermark-drives-finalization","truth_value":"IN","reason":"premise"},{"node":"window-lifecycle-one-directional","truth_value":"IN","reason":"premise"},{"node":"no-window-merging-or-retraction","truth_value":"IN","reason":"premise"}]}}