This is my favorite non-fiction read of the year so far. It tells the story of autism and reveals some of the controversies and difficulties in defining this condition. The book discusses the changing boundaries for diagnosing autism throughout the last century and how this is one of the reasons why it has been such an elusive condition to diagnose. Some parts of the book were emotional and the ways in which children diagnosed with autism have been treated and viewed throughout history were upsetting and disturbing. Reading about the autism advocacy movements started by parents was heartening and revealed the power of the advocacy groups to get exposure for a little known disorder called autism. Well written and informative.