Dan Everett is twice a heretic, having strayed from the path of Christian missionary work to become a linguist, and then breaking with the dominant branch of theoretical linguistics led by Noam Chomsky. I did a report on Dan for NPR in 2007, but I never broadcast this longer interview, from which that piece was taken. I decided to air it now because Dan will be on the show next week, talking about his new book on the origins of language. The earlier interview provides the fascinating backstory: how he went from rock n' roller to missionary to Amazonian linguist, his years in the rain forest with the isolated Pirahã tribe, their anomalous language, and how he came to doubt Chomsky's idea of universal grammar.