Watch this video from TED featuring Dan Dennett on HowStuffWorks. Dan Dennett is a Tufts philosophy professor and cognitive scientist, most famous for his books, Consciousness Explained (1991) and Darwin's Dangerous Idea (1995). In this talk, he responds to the presentation by Pastor Rick Warren, taking issue with claims in his book, The Purpose-Driven Life. See how designing religions work in this video from TED (www.ted.com)