The Book of Why: The New Science of Cause and Effect

By Judea Pearl and Dana Mackenzie *83

Published April 23, 2018

For decades, scientists lived by “correlation does not imply causation,” but not anymore. The Book of Why (Basic Books) puts the study of cause and effect on a firm scientific basis, explaining when we cannot know causation, and when we can say so confidently.

Paw in print

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Tod Williams ’65 *67 stands in front of the Brooklyn Bridge.
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July 2026

Architect Tod Williams ’65 *67 reflects on the Obama Presidential Center; rain and revelry at Reunions.