Many people gave me valuable criticism and advice in the writing of this book. They include Ray Batra, Sara Billmann, Dov Cohen, Christopher Dahl, William Dickens, Phoebe Ellsworth, James Flynn, Thomas Gilovich, Igor Grossmann, Keith Holyoak, Gordon Kane, Shinobu Kitayama, Darrin Lehman, Michael Maharry, Michael Morris, Lee Ross, Justin Sarkis, Norbert Schwarz, Stephen Stich, Carol Tavris, Paul Thagard, Amiram Vinokur, Kenneth Warner, and Timothy Wilson. I feel very lucky to have John Brockman and Katinka Matson as my literary agents.
I am deeply indebted to my sage editor, Eric Chinski, who functioned like a valued colleague. Peng Shepherd and the rest of the editorial staff at Farrar, Straus and Giroux were extremely helpful and patient.
Susan Nisbett made the book better in every way, from discussion of ideas to editing. She also makes my life better in every way.
I owe a great deal to the University of Michigan, whose environment encourages interdisciplinary research. Many fields of scientific research have been created there at the intersection of older disciplines. Participating in this ferment has helped me to see the extent to which science is a seamless web.