Mass Delusion

How can intelligent, rational individuals become caught up in collective beliefs that defy logic and evidence?

Throughout history, entire communities have embraced extraordinary ideas, followed destructive movements, and participated in speculative manias that seem almost incomprehensible in hindsight.

Mass Delusion explores the psychological and social mechanisms that allow false beliefs and collective irrationality to spread.

From the Dutch tulip mania and the Salem witch trials to financial bubbles, conspiracy theories, and online echo chambers, the book examines how social influence, uncertainty, fear, and group identity can overpower independent judgment.

Why do crowds amplify beliefs rather than correct them? How does collective certainty become resistant to contradictory evidence? And why are educated people not necessarily immune?

A fascinating exploration of crowd psychology, social contagion, collective belief, and the fragile boundary between rational thinking and shared delusion.