Recently I saw a corporate TV advertisement for the American television network ABC. It showed brief shots of people in other countries—France, Japan, Russia and so on. These people were doing all kinds of things, but they weren't watching television. Americans, the commentary told us, watch more TV than any of these people. Yet America is the richest, most innovative, most productive nation on the planet. ‘A coincidence’, concluded the wry, confident voice, ‘we don't think so’.