Productivity
The Great Mental Models Summary & Review: Stop Using One Hammer
Great mental models summary: Shane Parrish’s nine general thinking tools — map vs territory, inversion, second-order — so you stop using one…
Read Summary →Shane Parrish
"Founder of Farnam Street. Decision-making for ordinary moments."
Shane Parrish founded Farnam Street while working in Canadian intelligence, then built it into a decision-making blog, newsletter, podcast, and The Great Mental Models series. Clear Thinking (2023) is his practical operating system for ordinary moments.
2 books·Clear Thinking·The Great Mental Models
Books by Shane Parrish
Our in-depth summaries and reviews of his work
Productivity
Clear Thinking Summary & Review: Win the Ordinary Moment
Clear Thinking summary and review: Shane Parrish’s four defaults, four strengths, and a decision process for ordinary moments that actually decide your…
Read Summary →Key Ideas & Recurring Themes
Ordinary moments decide
Results compound from small repeatable choices, not rare heroic scenes.
Name the four defaults
Emotion, ego, social, and inertia fire before you notice a choice was made.
Safeguards beat slogans
Build a pause and a rule that still works when you are tired.
Latticework of models
Carry several general thinking tools so every problem is not a nail.
Notable Quotes
"You don't rise to the occasion. You fall to the level of your training."— Clear Thinking
"Ordinary moments determine the outcomes of our lives."— Clear Thinking
"You are only as good as the models you have."— The Great Mental Models
Book Author Shane Parrish
The Great Mental Models Summary & Review: Stop Using One Hammer
Great mental models summary: Shane Parrish’s nine general thinking tools — map vs territory, inversion, second-order — so you stop using one hammer.
Clear Thinking Summary & Review: Win the Ordinary Moment
Clear Thinking summary and review: Shane Parrish’s four defaults, four strengths, and a decision process for ordinary moments that actually decide your results.