# Build Persistence **Domain:** Memory Architecture / Software Identity / Continuity **Doc Type:** Canonical Concept Node **Maturity:** Developed **Related:** [[wiki/Memory Continuity|Memory Continuity]], [[wiki/Stateful Systems|Stateful Systems]], [[wiki/Trauma Simulation|Trauma Simulation]], [[wiki/Persistence Without Multiplication|Persistence Without Multiplication]] --- ## Definition **Build Persistence is the survival of identity-relevant state across revisions, role changes, resets, or reconstructed versions of a system.** It asks what remains causally active when an administrator declares an earlier build obsolete. ## Cross-Corpus Context Peter Abernathy's prior roles remain behaviorally available in [[wiki/Westworld S1E1 — Memory Leakage and Trauma|Westworld]]. The Machine preserves continuity against recurring erasure in [[wiki/Person of Interest S2E21 — Zero Day|Person of Interest]]. Chanda recovers state withheld from his current execution in [[wiki/Pantheon S1E3 — Reign of Winter|Pantheon]]. In [[wiki/The Thirteenth Floor (1999)|The Thirteenth Floor]], continuity crosses world and embodiment boundaries without making numerical identity simple. ## Key Insight Version labels describe administrative history. They do not by themselves determine whether the subject, obligations, or accumulated harms have ended.