gladwell dot com: Blink: "Where did you get the idea for 'Blink'?

Believe it or not, it's because I decided, a few years ago, to grow my hair long. If you look at the author photo on my last book, 'The Tipping Point,' you'll see that it used to be cut very short and conservatively. But, on a whim, I let it grow wild, as it had been when I was teenager. Immediately, in very small but significant ways, my life changed. I started getting speeding tickets all the time--and I had never gotten any before. I started getting pulled out of airport security lines for special attention. And one day, while walking along 14th Street in downtown Manhattan, a police van pulled up on the sidewalk, and three officers jumped out. "