This is a story with a hopeful ending. Lucky, even. But be forewarned, you have to get through a lot of hopeless, unlucky crap before you find it. Here's how it all starts: My first-born son has autism. Now that isn't hopeless or, in my opinion, unlucky. Autism isn't sick or crazy. It's rigid and routine, a little eccentric. Autism is multiplying columns of numbers easily while being unable to look anyone in the eyes; listening to only one band's music, and always in the same order, for a period of six weeks; refusing to eat anything orange. It's also...