Gary Klein's pre-mortem technique is deceptively simple and extraordinarily powerful. Before executing a decision, imagine that it has failed spectacularly, and then work backward to identify the causes of that failure.
Why Pre-Mortems Work
Traditional risk assessment asks "what could go wrong?" This question, while useful, runs into a psychological barrier: when you have already committed to a plan, your mind naturally generates reasons why it will succeed rather than why it will fail. Optimism bias, confirmation bias, and plan continuation bias all conspire to make risk identification superficial.
The pre-mortem sidesteps these biases by changing the framing. Instead of asking what might go wrong, you are told that it has already gone wrong and asked to explain why. This subtle shift activates a completely different mode of thinking.
The decision-making scenarios at KeepRule incorporate pre-mortem thinking to strengthen anticipatory reasoning.
How to Run a Pre-Mortem
Step 1: Present the plan. Share the decision or plan with the team. Make sure everyone understands what is being proposed.
Step 2: Announce the failure. Tell the group: "Imagine that we implemented this plan exactly as described. One year later, it has failed completely. Take two minutes to write down why it failed."
Step 3: Collect explanations. Have each person share their failure story. Go around the room one at a time. No discussion or debate during this phase -- just collection.
Step 4: Identify the most critical failure modes. Group the explanations into themes. Vote on which failure modes are most likely and most consequential.
Step 5: Strengthen the plan. For each critical failure mode, design a mitigation. This might mean changing the plan, adding contingencies, or defining kill criteria.
Why This Beats Traditional Risk Assessment
Social permission to dissent: The pre-mortem gives people explicit permission to voice concerns. In a normal planning meeting, saying "I think this will fail" is socially risky. In a pre-mortem, it is your assignment. The core principles recognize that truth-telling requires structural support.
Engages imagination: Rather than asking people to think analytically about abstract risks, the pre-mortem asks them to tell a story about failure. Stories engage imagination, emotion, and detailed thinking in ways that analytical frameworks do not.
Reveals diverse concerns: Different team members will identify different failure modes based on their unique knowledge and perspective. The pre-mortem aggregates these diverse perspectives into a comprehensive risk picture.
Specific and actionable: Abstract risks ("the market might change") are hard to mitigate. Pre-mortem stories ("we launched in Q3, but the competitor released a similar product in Q2 at a lower price point, and we could not adjust because our manufacturing contracts were fixed") are specific enough to address.
Pre-Mortem Examples
Product launch: "We launched the product, but adoption was far below projections. The onboarding process was too complex, requiring 45 minutes of setup. Users abandoned the product before experiencing its value."
Hiring decision: "We hired the candidate with the strongest technical skills. Six months later, they were technically productive but had alienated three team members with their communication style, leading to two departures."
Strategic initiative: "We invested in expanding to the European market. Eighteen months later, we pulled out after burning through 2 million dollars. We had underestimated the regulatory complexity and overestimated the transferability of our US brand recognition."
The decision masters throughout history used pre-mortem-like practices, mentally rehearsing failure scenarios before committing to action.
When to Use Pre-Mortems
Pre-mortems are most valuable for:
- High-stakes decisions: Where the cost of failure justifies the time investment
- Novel situations: Where you lack historical data to inform risk assessment
- Team decisions: Where diverse perspectives can surface risks no individual would identify
- Commitment points: Where you are about to commit resources that will be difficult to recover
The Compound Benefit
Regular pre-mortem practice changes your relationship with risk. Over time, anticipatory thinking becomes automatic -- you start naturally imagining failure scenarios before they are suggested. This shift from reactive to proactive risk management is one of the highest-leverage improvements any decision-maker can make.
For more on structured decision-making practices, visit the KeepRule blog and FAQ.
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