I keep stumbling across unswerving predictions that the future belongs to China. Or, perhaps to the contrary, that the Middle Kingdom will always struggle to challenge US primacy. Don’t ask where India and Brazil fit in. Enjoyable as it is, this exercise in the remaking of the geopolitical landscape is also something of a diversion. The 21st century will not be shaped by the abstract choices of states. Transformative power will belong to a new global middle class.