We’ve decided by consensus that consensus is good. In this essential book, psychologist Charlan Nemeth argues that this principle is completely wrong: left unchallenged, the majority opinion is often biased, unoriginal, or false. It leads planes and markets to crash, causes juries to convict innocent people, and can quite literally make people think blue is green. We can make better decisions by embracing dissent: it forces us to question the status quo, consider more information, and engage in creative decision-making. From Twelve Angry Men to Edward Snowden, lone objectors who make people question their assumptions bring groups far closer to truth. By studying these examples and bringing a little trouble-maker spirit to our own lives, we can radically change the way we think, listen, and make decisions.