Thinking Lenses
Paste the prompt into a new chat in ChatGPT or Claude, tell it a decision you're weighing, and it runs your reasoning through the right lens, like first principles, inversion, or expected value, etc.
The lenses
- First principles (Elon Musk's five-step algorithm)
- As simple as possible, but not simpler (Feynman and Einstein)
- Constraint diagnosis (Alex Hormozi's "why can't we do more?")
- Second-order effects
- Biases and fallacies (Rolf Dobelli and Charlie Munger)
- Expected value, asked in counts out of 100 tries
- Regret minimization (Jeff Bezos)
- Weighted decision matrix
- Behavior design (James Clear's Atomic Habits)
- Opportunity cost (Charlie Munger)
- Inversion and the pre-mortem (Charlie Munger and Gary Klein)
- Tradeoffs, not solutions
Built from Elon Musk's five-step algorithm, Richard Feynman, Alex Hormozi's The Game podcast, Rolf Dobelli's The Art of Thinking Clearly, Charlie Munger, Jeff Bezos, James Clear's Atomic Habits, and Gary Klein's pre-mortem.

