Now in paperback, Siddhartha Mukherjee's instant New York Times-bestselling The Emperor of All Maladies, a 'magisterial' history of cancer--one of the New York Times Book Review's 10 Best Books of 2010. 'An extraordinary achievement." -The New Yorker "It's time to welcome a new star in the constellation of great writer-doctors. ' --Washington Post.

From one of the world’s most celebrated intellectuals, a brilliantly insightful work that explains how we think about each other’s thoughts about each other’s thoughts, ad infinitum. It sounds impossible, but Steven Pinker shows that we do it all the time. This awareness, which we experience as something that is public or “out there,” is called common knowledge, and it has a momentous impact on our social, political, and economic lives.

Common knowledge is...