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pre-mortem
Pre-mortem (Gary Klein): before starting, assume the project has catastrophically failed.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
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Pre-mortem (Gary Klein): before starting, assume the project has catastrophically failed.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
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| name | pre-mortem |
| type | skill |
| hint | Imagine the project failed; work backward to identify why; surfaces risks before they happen |
| version | 1.0.0 |
| tags | ["transferable","pre-mortem","risk","failure","planning","prospective","hindsight","mitigation"] |
| tier | sm0l |
| complexity | 3 |
| description | Pre-mortem (Gary Klein): before starting, assume the project has catastrophically failed. |
The pre-mortem (coined by Gary Klein) is a prospective failure analysis technique. Before starting a project, assume it has catastrophically failed. Ask: "It is 6 months from now. This project failed completely. Why?" List every plausible cause and rank by likelihood × impact. This technique works because prospective hindsight activates different reasoning than standard risk analysis — people are more honest about failure causes when asked "why did it fail" vs "what might go wrong."
Steps: (1) State the goal clearly. (2) Fast-forward to failure. "It failed. What happened?" (3) List all causes — suppress optimism bias, allow pessimism. (4) For each top-3 cause, add a mitigation to the plan now.
Use pre-mortem before any significant project, feature launch, or deployment. It is especially valuable in high-stakes situations where optimism bias might cause teams to underweight tail risks.