The twentieth century should make sense. It's the period of history that we know the most about, an epic geo-political narrative that runs through World War One, the great depression, World War Two, the American century and the fall of the Berlin Wall. But somehow that story doesn't quite lead into the world we find ourselves in now, this bewildering twenty-first century, adrift in a network of constant surveillance, unsustainable competition, tsunamis of trivia and extraordinary opportunity. Time, then, for a new perspective...