A. J. Jacobs is an American journalist and guinea pig who write books based on plunge experiences. Once he joined Mensa and read all thirty-two volumes of the Encyclopedia Britannica to see what it would be like to be “The Know-It-All: One Man’s Humble Quest to Become the Smartest Person in the World (2004). In another plunge experience he decided only to tell the truth, the whole truth, and nothing but the truth about everything in life. That project had the title I Think You’re Fat (2007), which kind of says it all about how that project went. In another plunge experience, he decided to outsource everything in his life to India, including reading bed-time stories to his kids and arguing with his wife. That project bore the title My Outsourced Life (2005). To understand dating, he became …