Let me give you an example. When I first published some of these data a few years ago in a magazine called Foreign Policy, one of the people who wrote in, not entirely in agreement, was Tom Friedman. And since my article was titled "" Why the World Isn't Flat, "" that wasn't too surprising. (Laughter) What was very surprising to me was Tom's critique, which was, "" Ghemawat's data are narrow. "" And this caused me to scratch my head, because as I went back through his several-hundred-page book, I couldn't find a single figure, chart, table, reference or footnote.