The British writer Johann Hari has just released a new book about how to treat depression. It's a book that makes a case for a much different approach -- but that's not what is sparking the most controversy. In the book, Hari claims that antidepressants fail the vast majority of the time. He makes statistical claims that have already been essentially debunked. The medical community is concerned that Hari's claims could convince people to stop taking medication, so they're pushing back. We