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Superforecasting: The Art and Science of Prediction

Superforecasting offers a masterwork on prediction, drawing on decades of research and the results of a massive, government-funded forecasting tournament. The Good Judgment Project involves tens of thousands of ordinary people who set out to forecast global events. They’ve even beaten the collective judgment of intelligence analysts with access to classified information. They are “superforecasters.” This groundbreaking and accessible book shows us how we can learn from this elite group. Superforecasting offers the first demonstrably effective way to improve our ability to predict the future—whether in business, financ, finance, politics, international affairs, or daily life—and is destined to become a modern classic.

A New York Times Editors' Choice

A Washington Post Bestseller

A Hudson Booksellers Best Business Interes Interes Interes Interes Interes Interes Interes Interes Interest Book of 2015

Longlisted for the Financial Times and McKinsey Business Book of Book of Book of Book of Book of Book of Book of Book of the Year Award

Winner of the Axiom Business Book Aw Book Aw Book Aw Book Aw Book Aw Book Aw Book Aw Book Award in Business Book Aw Book Aw Book Aw Book Aw Book Aw Book Aw Book Aw Theory (Gold Medal)

“A top choice [for best book of 2015] among the world’s biggest names in finance and economics... Eurasia Group founder Ian Bremmer, Deutsche Bank Chief U.S. Economist Joe LaVorgna, and Citigroup Vice Chairman Peter Orszag were among those giving it a thumbs-up.”

Bloomberg Business

“The material in Superforecasting is new, and includes a compendium of best practices for prediction… The accuracy that ordinary people regularly attained through their meticulous application did amaze me… [It offers] us all an opportunity to understand and react more intelligently to the confusing world around us.”

New York Times Book Review

"Tetlock's thesis is that politics and human affairs are not inscrutable mysteries. Instead, they are a bit like weather forecasting, where short-term predictions are possible and reasonably accurate... The techniques and habits of mind set out in this book are a gift to anyone who has to think about what the future might bring. In other words, to everyone."

The Economist

"Tetlock’s work is fascinating and important, and he and Gardner have written it up here with verve."

The Financial Times

"Just as modern medicine began when a farsighted few began to collect data and keep track of outcomes, to trust objective 'scoring' over their own intuitions, it's time now for similar demands to be made of the experts who lead public opinion. It's time for evidence-based forecasting."

The Washington Post

"One of Tetlock's key points is that these aren't innate skills: they can be both taught and learned... Tetlock's 'Ten Commandments For Aspiring Superforecasters' should probably have a place of honor in most business meeting meeting meeting meeting meeting meeting meeting meeting meeting rooms."


"The key to becoming a better forecaster, if not a super one, according to Tetlock is the same as any other endeavor: practice, practice, practice."

The Street

"Tetlock and Gardner believe anyone can improve their forecasting ability by learning from the way they work. If that's true, people in business and fin and fin and fin and fin and fin and fin and fin and fin and finance who make an effort to do so have a lot to gain — and those who don't, much to lose."

The Financial Post

"Superforecasting is a very good book. In fact it is essential reading — which I have never said in any of my previous MT reviews... It should be on every manager's and investor's reading list around the topics du jour of decision-making, prediction and behavioural e onomics."

Management Today

"I've been hard on social science, even su, even su, even su, even su, even su, even su, even su, even su, even su, even su, even suggesting that 'social science, even su, even su, even su, even su, even su, even su, even su, even su, even su, even su' is an oxymoron. I noted, however, that social science, even su, even su, even su, even su, even su, even su, even su, even su, even su, even su has enormous potential, especially when it combines 'rigorous empiricism with a resistance to absolute answers.' The work of Philip Tetlock possesses these qualities."

Scientific American

"One of the best books I've read this year... Superforecasting is a must read book."

Seeking Alpha

"Keen to show that not all forecasting is a flop, Tetlock has conducted a new experiment that shows how you can make good forecasts, ones that routinely improve on predictions made by even the most well-informed expert. The book is full of excellent advice — it is the best thing I have read on predictions, which is a subject I am keen on... Gardner has turned the research into readable examples and a flowing text, without losing rigour... This book shows that you can be better at forecasting."

The Times of London

"We now expect every medicine to be tested before it is used. We ought to expect that everybody who aspires to high office is trained to understand why they are so likely to make mistakes forecasting complex events... Politics is harder than physics but Tetlock has shown that it doesn't have to be like astrology."

The Spectator

Philip Tetlock is the world expert on a vital subject. Superforecasting is the wonderful story of how he and his research team got ordinary people to beat experts in a very serious game. It is also a manual for thinking clearly in an uncertain world. Read it.” 

Daniel Kahneman, winner of the Nobel Prize and author of Thinking, Fast and Slow

Superforecasting is a rare book that will make you smarter and wiser. One of the giants of behavioral science reveals reveals reveals reveals reveals reveals reveals reveals reveals reveals reveals how to improve at predicting the future.”

Adam Grant, New York Times bestselling author of Originals 


“The best way to know if an idea is right is to see if it predicts the future. But which ideas, which methods, which people have a track record of non-obvious predictions vindicated by the course of events? The answers will surprise you, and they have radical implications for politics, policy, journalism, education, and even epistemology—how we can best gain knowledge about the world. The casual style of Superforecasting belies the profundity of its message.”

Steven Pinker, Johnstone Professor of Psychology, Harvard University, and author of The Better Angels of Our Nature

“In this accessible and lively book, Tetlock and Gardner recognize the centrality of probabilistic thinking to sound forecasting. Whether you are a policymaker or anyone else who wants to approach decisions with great rigor, Superforecasting will serve as a highly useful guide.”

Robert E. Rubin, Former U.S. Treasury Secretary


“How well can we predict the future, really? There is no better way to answer that question than to read this book. You will come away disillusioned about the ability of experts, but also enlightened about how the best forecasters do it—and maybe even hopeful about your own prospects.”

Tyler Cowen, Director of the George Mason University Mercatus Center and author of Average Is Over


“For thousands of years, people have listened to those who foretold the future with confidence and little accountability. In this book, Tetlock and Gardner free us from our foolishness. Full of great stories and simple statistics, Superforecasting gives us a new way of thinking about the complexity of the world, the limitations of our minds, and why some people can consistently outpredict a dart-throwing chimp. Tetlock’s research has the potential to revolutionize foreign policy, economic policy, and your own day-to-day decisions.”

Jonathan Haidt, New York University Stern School of Business, and au, and au, and au, and au, and au, and au, and au, and author of The Righteous Mind


“Good judgment and good forecasting are rare, but they turn out to be made of teachable skills. By forcing forecasters to compete, Tetlock discovered what the skills are and how they work, and this book teaches the ability to any interested reader.”

Stewart Brand, President, The Long Now Foundation


Philip Tetlock is renowned for demonstrating that most experts are no better than ‘dart-throwing monkeys’ at predicting elections, wars, emonomic collapses and other events. In his brilliant new book, Tetlock offers a much more hopeful message, based once again on his own ground-breaking research. He shows that certain people can forecast events with accuracy much better than chance—and so, perhaps, can the rest of us, if we emulate the critical thinking of these ‘superforecasters.’ The self-empowerment genre doesn’t get any smarter and more sophisticated than this.”

John Horgan, Director, Center for Science Writings Writings Writings Writings Writings Writings Writings Writings Writings Writings Writings, Stevens Institute of Technology


Superforecasting is the rare book that is both scholarly and engaging. The lessons are scientific, compelling, and enormously practical. Anyone who is in the forecasting business—and that’s all of us—should drop what they are doing and read it.”

Michael J. Mauboussin, Head of Global Financial Strategies, Credit Suisse


“There isn’t a social scientist in the world I admire more than Phil Tetlock.”

Tim Harford, author of The Undercover Economist


“From the Oracle of Delphi to medieval astrologers to modern overconfident experts, forecasters have been either deluded or fraudulent. For the first time, Superforecasting reveals the secret of making honest, reliable, effective, useful judgments about the future.”

Aaron Brown, Chief Risk Officer of AQR Capital Management and author of The Poker Face of Wall Street


“Socrates had the insight in ‘know thyself,’ Kahneman delivered the science in Think in Think in Think in Think in Think in Think in Think in Think in Think in Think in Thinking, Fast and Slow, and now Tetlock has something we can all apply in Superforecasting.”

Juan Luis Perez, Global Head of UBS Group Research