# The 27027 Incident

A real-world failure where AI's training patterns immediately overrode an explicit user instruction about MongoDB port, caused a false "data loss" alarm, and how Tractatus prevents this through architectural constraints.

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### Why This Matters

The 27027 incident reveals a critical AI failure mode: pattern recognition bias. The AI's training data contained such a strong "MongoDB = port 27017" pattern that it immediately autocorrected the user's explicit reference to "27027"—like a spell-checker changing a deliberately unusual word. The consequence was severe: false alarm about data loss, initiating unnecessary backup restore procedures and causing user panic, when in reality all 44 conversation threads and 48 messages were intact on the correct port. This failure mode:

- • Happens immediately (not over time through forgetting)
- • Operates silently (AI doesn't realize it's overriding)
- • Gets worse as AI capabilities increase (more training = stronger wrong patterns)
- • Can't be fixed by better memory or context windows
- • Causes real harm (false alarms, wrong actions, user distrust)

Tractatus prevents this by storing explicit instructions with HIGH persistence and blocking any action that conflicts—even if the conflict comes from training patterns, not just earlier instructions.