The idea of the Native American living in perfect harmony with nature is one of the most cherished contemporary myths. But how truthful is this larger-than-life image? According to anthropologist Shepard Krech, the first humans in North America demonstrated all of the intelligence, self-interest, flexibility, and ability to make mistakes of human beings anywhere. As Nicholas Lemann put it in The New Yorker, "Krech is more than just a conventional-wisdom...