# Postmortem Stage — Elaboration

## Criteria Guidance

### Good criteria — concrete and verifiable

- "Postmortem timeline includes every key event from trigger to resolution with timestamps and actors"
- "Each action item has an owner, priority, and due date — no unassigned items"
- "Prevention measures address systemic gaps, not just the specific failure that occurred"

### Bad criteria — vague (no clear check)

- "Postmortem is written"
- "Action items are listed"
- "Lessons are documented"

