---
id: "rlm_axiom_019"
category: "general"
date: "2026-02-23"
source_file: "rlm_axioms_2026_02_23.jsonl"
---

# rlm_axiom_019

**principle**: Cross-session memory requires explicit materialization: session context does not persist automatically. Effective cross-session continuity requires explicit CTM writes at session end + context injection at session start. Relying on implicit memory = starting blind.

**evidence**: Session 80 CTM (session_80_ctm_2026_02_23.jsonl) and Session 81 CTM (session_81_ctm_2026_02_23.jsonl) demonstrate the pattern. Without these writes, post-compaction sessions (charming-dirac) would lose all state. Memory inject hook (memory_context_inject.py) is the other half.

**strength**: high
