LET ME BEGIN on a personal note. On September 10, 2001, I had worked long into the night making revisions to the book that you are now holding. So I was still asleep at 7 a.m., Pacific Standard Time, when a relative called and blurted out something about the World Trade Center in New York City having been attacked by terrorists. Still groggy, I flicked on the TV. From that moment on, I?like mil…