The latest edition of the DSM – the diagnostic manual of psychiatry – is hot off the presses, and it once again redraws the map of mental malfunction. Hoarding disorder and caffeine withdrawal are in, Asperger's is out. Critics like psychotherapist Gary Greenberg say there's a reason the DSM is a palimpsest: despite its quasi-scientific airs, it has little to do with any clear understanding of mental illness and a lot to do with changing societal attitudes, politics and money. Gary and I discussed his new book, "The Book of Woe: The DSM and the Unmaking of Psychiatry."