Walk the first 30 minutes of a model incident

Incident start 10:07 a.m. The loan pre-approval model rejects 22% more applicants than baseline. The spike began after the morning feature job, but no one knows whether customers are being incorrectly blocked. The first moves decide whether the team contains harm or spends 30 minutes debating theories. Incident sequence Confirm -> Bound -> Mitigate -> Investigate Use response discipline before model cleverness. Confirm the symptom, bound the affected population, choose proportional mitigation, then investigate root cause with evidence intact. Reflex Argue about retraining or root cause first. Root cause comes after containment, not before it. A model incident is managed…

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