postmortem

Repeated action items are a measurable defect with a mechanical cause. Candidates who answer 'culture' without a mechanism are describing the symptom back to you.

An incident answer needs your actual decisions, the evidence behind them and the effect on users. A wrong turn belongs in the story only if it happened.

A question that punishes both extremes. A trivial mistake reads as evasion, a catastrophic one told carelessly reads as reckless, and the interviewer is really asking what you do in the twenty minutes after you realise.