Run a Pre-Mortem Before Your Plan Fails
Imagine your project already failed — then work backward to find the causes and prevent them now
Instead of asking how to succeed, ask how to guarantee failure — then invert for original insights
I'm working on [PROJECT/GOAL]. Instead of telling me how to succeed, tell me: 1. List 10 ways to GUARANTEE this fails. Be creative, specific, and brutal. 2. For each failure mode, explain: - Why it would kill the project - The early warning sign - The specific action to prevent it 3. Which 3 of these am I MOST LIKELY already doing without realizing? 4. Create a "Failure Prevention Checklist" I can review weekly. Be specific to MY situation, not generic.
Inversion thinking is a proven mental model used by Charlie Munger and other elite decision-makers. By asking 'how would we guarantee failure,' the prompt bypasses cognitive biases that make us blind to risks and surfaces threats we'd never identify through positive-only brainstorming.
Use when planning a product launch, starting a new project, or entering unfamiliar territory where failure modes aren't obvious. Particularly powerful when your team is overly optimistic or when you're stuck in conventional thinking and need a fresh angle on risk assessment.
You'll receive a comprehensive list of failure modes you hadn't considered, each inverted into a specific preventive action. The output gives you both a risk register and a prevention checklist—turning potential blind spots into concrete safeguards for your plan.
Imagine your project already failed — then work backward to find the causes and prevent them now
Identify, score, and prioritize risks with mitigation strategies before committing to any project or plan
Stress-test your idea before reality does.
Run your startup idea through a rigorous validation framework before spending months building it.
Poke holes in your business model like a skeptical VC. Find the weak spots before your pitch meeting.