Invert, always invert.
Core idea
Solving problems by reversing them - asking what would cause failure instead of only what would produce success - is often clearer and more effective. Inversion simplifies hard decisions.
Practical application
When evaluating an investment, ask what could permanently impair capital, what would make the thesis fail, or what conditions would make the business unattractive. Then work backward from there.
Why it matters
Munger is advocating for a practical mental model, not a slogan. In investing, avoiding obvious failure points is frequently more important than finding the perfect idea.
