Bill Gates says he believes he would have been diagnosed with a form of autism if he had grown up in this era. The Microsoft co-founder, who is one of the world's richest people, makes the observation in his memoir: Source Code: My Beginnings - which will be released on Tuesday. In an excerpt shared by The Wall Street Journal, the 69-year-old billionaire wrote: "If I were growing up today, I probably would be diagnosed on the autism spectrum. "My parents had no guideposts or textbooks to help them grasp why their son became so obsessed with certain projects, missed...