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Super Thinking
Turn mental models into better decisions ⭐ Practice mental models — inversion, first principles, second-order thinking, incentives, premortem — with short daily drills and spaced repetition. Try a drill, no signup.

Website, pricing, platforms and company facts side by side.
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| Website | open-gpt.app | toohardpile.com |
| Pricing | — | |
| Company | — | 2026 |
| Listed in | — |
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I knew the mental models. I just wasn't using them. For years, I collected mental models. Inversion. First principles. Second-order thinking. Opportunity cost. Premortems. Sunk cost. 10/10/10. I could explain them. Give examples. Feel pretty smart about them. Then a genuinely difficult decision...
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