When we arrived at my home north of the city, my five-year-old son Magnus, brimming with the confidence he'd gained in two full weeks of kindergarten, opened the front door and asked John, "Is it true you live in a tent?""Yes, it is," John said."Why don't you have a house like everybody else?"John leaned in to meet Magnus' dubious stare. "Because I endeavor to remain flexible.

Separating fact and fiction in Inca history is impossible, because virtually all the sources available are Spanish accounts of stories that had already been vetted by the Inca emperors to highlight their own heroic roles. Imagine a history of modern Iraq written by Dick Cheney and based on authorized biographies of Sadam Hussein published in Arabic, and you'll get some idea of what historians face.