Inversion Thinking

Overview

Inversion thinking, championed by Charlie Munger and rooted in mathematician Carl Jacobi's principle "Invert, always invert," approaches problems by considering their opposite. Instead of asking "How do I succeed?", ask "How would I guarantee failure?" then avoid those paths.

Core Principle: "All I want to know is where I'm going to die, so I'll never go there." — Charlie Munger

When to Use

• Planning a new project, feature, or initiative
• Evaluating a decision before committing
• Identifying risks that optimistic thinking obscures
• Stuck on how to achieve a positive outcome
• Need to challenge assumptions in a plan
• Writing requirements or acceptance criteria

Decision flow:

Have a goal? → yes → Can you list ways to achieve it? → maybe → INVERT FIRST
                                                      ↘ no → Definitely invert