Inversion
Instead of asking how to succeed, ask how to fail — then avoid that. The fastest path to clarity, championed by Charlie Munger and the mathematician Carl Jacobi.
Solve the opposite problem.
Most problem-solving asks: "How do I achieve X?" Inversion asks the reverse: "What would guarantee failure?" The insight is that it's often easier to enumerate what destroys value than to construct what creates it. By listing the failure modes and systematically eliminating them, you arrive at success — without ever having to define it directly.
Carl Jacobi, the 19th-century mathematician, instructed his students: "Invert, always invert." Munger applied the same principle to investing and life decisions. The result is a clearer, less anxious decision process — one that survives by avoiding what's fatal rather than chasing what's optimal.
Charlie Munger"It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent. Invert. Always invert."
A four-step process.
Define the goal
State the outcome you want — growth, retention, a successful launch — in one sentence.
Invert it
Ask: What would guarantee failure here? Write down every path to catastrophe.
Enumerate failure modes
List the specific actions, habits, and decisions that would produce the worst outcome.
Eliminate them
Build systems and guardrails that prevent each failure mode. What remains is the path forward.
How to fail at a startup.
Instead of asking how to build a successful company, ask: "How would I guarantee this startup fails?" The list writes itself — ignore the customer, run out of cash, hire the wrong people, chase vanity metrics, refuse to ship, argue with co-founders in public.
Every item on that list is something founders do constantly — often while believing they're pursuing success. Inversion doesn't tell you the optimal go-to-market. It tells you which traps are fatal, so you can build guardrails against them before they fire.
The companies that survive aren't the ones with the best strategy. They're the ones that systematically avoided the worst mistakes. Survive first. Optimize second.
What would guarantee failure?
If you can name the things that would sink your decision, you've already half-solved it. Let's map the failure modes together.
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