The Undoing Project

A Friendship that Changed the World

THE NEW INTERNATIONAL BESTSELLER FROM THE AUTHOR OF THE BIG SHORT AND FLASH BOYS

'A gripping account of how two psychologists reshaped the way we think . What a story it is' Sunday Times
'You'll love it . full of surprises and no small degree of tragedy' Tim Harford

In 1969 two men met on a university campus. Their names were Daniel Kahneman and Amos Tversky. They were different in every way. But they were both obsessed with the human mind - and both happened to be geniuses. Together, they would change the way we see the world.

'An enchanted collaboration . During the final pages, I was blinking back tears' The New York Times

'My favourite writer full stop. Engages both heart and brain like no other' Daily Telegraph

'Brilliant, a wonderful book, a masterclass' Spectator

'Psychology's Lennon and McCartney . Lewis is exactly the storyteller they deserve' Observer

UK Delivery:

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Dispatch and Delivery Times:

• All orders are shipped from our warehouse in Northampton, UK within 48 hours of receipt during working hours.
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• International estimated delivery times:
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• USA: 7 to 15 working days
• Rest of the World: 9 to 21 working days

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