Khizooology monster logoKhizooology

Superforecasting

Philip E. Tetlock & Dan Gardner · 2015

Replace certainty with estimates you can test.

Big Idea

The authors argue that forecasting improves through clear questions, probabilistic thinking, revision, and honest feedback.

Answerable Questions

A forecast needs a defined event and deadline so its accuracy can eventually be checked.

Probabilities

Assigning a probability expresses uncertainty more precisely than simply saying an event will happen.

Updating

Revise estimates when evidence changes instead of protecting a prediction made earlier.

Different Perspectives

Teams can improve judgment by comparing information and challenging each other’s assumptions.

Keeping Score

Recorded predictions reveal whether confidence has matched results over time.

  • Success on studied questions does not make every distant or unprecedented event predictable.

Khizooo Take

Write down one forecast with a deadline and probability, then review it without rewriting what you originally believed.

Remember

A forecast becomes useful when it can be corrected.

NOTOOO · KHIZOOOLOGYOne Book. One Page.khizooology.com

Why this book matters

The authors argue that forecasting improves through clear questions, probabilistic thinking, revision, and honest feedback.

About this Notooo

Probability, updating, teamwork, and scored predictions in Tetlock and Gardner’s research-based account of better forecasting.

A khizooo-curated one-page synthesis created with AI-assisted research. It captures useful ideas, not the complete book.
Notooo is not a replacement for reading the original book.