What is Pre-Mortem Analysis?

Pre-Mortem Analysis is a mental model used for better thinking and decision-making.

How do you apply Pre-Mortem Analysis?

To apply Pre-Mortem Analysis, identify situations where this framework is relevant, then use it as a lens to evaluate your options and decisions. The model is most useful when combined with other complementary mental models.

What category does Pre-Mortem Analysis fall under?

Pre-Mortem Analysis falls under the General Thinking & Meta-Models category of mental models. Other models in this category can be found on the General Thinking & Meta-Models hub page.

Why is Pre-Mortem Analysis important?

Pre-Mortem Analysis is important because it provides a structured way to think about problems that would otherwise be approached with intuition alone. Understanding this model helps you avoid common reasoning errors and make better decisions.

Where does Pre-Mortem Analysis come from?

Pre-Mortem Analysis is discussed in the tradition of Gary Klein.

General Thinking & Meta-Models

Pre-Mortem Analysis

Model #0361Category: General Thinking & Meta-ModelsSource: Gary KleinDepth to apply:

15 min read

Contents

1. The Core Idea
2. How to See It
3. How to Use It
4. The Mechanism
5. Founders & Leaders in Action
6. Visual Explanation
7. Connected Models
8. One Key Quote
9. Analyst's Take
10. Test Yourself
11. Summary & Further Reading

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Section 1

The Core Idea

A pre-mortem is a decision exercise: assume the project or decision has already failed, then work backward to list why. The team imagines it is twelve months later and the launch has flopped, the deal has collapsed, or the bet has lost. Then each person writes or says the reasons it failed. The exercise surfaces risks and objections that normal planning suppresses. Optimism and group cohesion make it hard to say "this could go wrong" in a kickoff meeting. The pre-mortem gives permission: the failure is hypothetical, so naming causes is safe. The output is a list of failure modes to mitigate, monitor, or accept.

Gary Klein developed the method and showed that it increases the identification of risks compared to standard "what could go wrong?" discussion. The difference is psychological: when failure is assumed, the brain engages in a different search. Instead of defending the plan, people probe for weak points. The pre-mortem doesn't replace due diligence or red teams, but it is a fast, low-cost way to improve decisions before commitment. Use it for major bets: product launches, acquisitions, strategy pivots, key hires.