Superforecasting: The Art and Science of Prediction
Philip E. Tetlock & Dan Gardner · 2015
Superforecasting (2015) is a book by Philip E. Tetlock & Dan Gardner on psychology & human behavior. Drawing on a massive multi-year forecasting tournament, Tetlock reveals that prediction is a measurable, learnable skill, and shows the specific habits of mind that let "superforecasters" beat experts and even intelligence analysts.
Forecasting isn't a gift you're born with, it's a discipline of humility, math, and relentless self-correction that ordinary people can outperform CIA analysts by learning.
Two of the ideas you’ll keep
The Clif summary of Superforecasting pulls out 7 insights. Here are the first two.
- Forecasting skill is real and measurable: in the IARPA-funded Good Judgment Project tournament, a small group of amateur superforecasters beat control groups by margins that let them outperform intelligence analysts with access to classified data.
- The best predictors are foxes, not hedgehogs. Hedgehogs know 'one big thing' and force every question through a single ideology; foxes gather many perspectives. Tetlock's earlier research showed the confident hedgehog's accuracy sank toward chance, while the self-critical, many-model fox did meaningfully better.
The other 5 — and the full 11-minute summary — are in the app.
What’s inside: 8 chapters
The whole summary runs about 11 minutes, read or listened to.
- The Pundit Problem: Why Expertise Fails
- Measuring the Unmeasurable: Brier Scores
- Foxes and Hedgehogs
- Superforecasters Emerge
- Thinking in Bets and Fermi-izing
- The Granularity of Probability
- Perpetual Beta and the Growth Mindset
- Teams, Leadership, and the Wisdom of Groups
Finish Superforecasting tonight.
Read or listen to the full summary in about 11 minutes, then keep the ideas with a minute of review a day. Start with the 2-minute quiz — no card required.
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