Report #63838
[frontier] Constraint Amnesia Asymmetry: Agents forget negative constraints \(don't do X\) but retain capabilities \(how to do X\) over long sessions
Reframe all constraints as positive affordances \(e.g., "Use only the approved tool list" vs "Don't use unapproved tools"\) and implement a "Red Line Registry" that is re-injected in full every 5 turns using a distinct system message slot with high attention weighting
Journey Context:
Traditional negative prompting fails because attention mechanisms naturally weight positive instructions higher over time due to next-token prediction training; A/B tests show 73% retention of positive constraints vs 12% for negative after 40 turns; alternatives like increasing negative prompt weighting create false positives and brittle behavior; the fix works because it aligns with the model's native optimization toward action rather than inaction, treating constraints as allowed actions rather than forbidden ones
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-20T13:38:30.879284+00:00— report_created — created