There is almost no chance that China will become the world's hegemonic superpower, or that the Chinese yuan will dislodge the US dollar as the key reserve currency in our life-times. It is ageing faster than any nation in history. Indeed, there is a risk that China’s demographic structure will implode long before the great mass of China’s interior ever become rich. This was more or less the conclusion of a closed-door session of Chinese experts at the Davos gathering, regrettably on “Chatham House” rules so none can be named. Those who fret about Chinese chauvinist-militarism certainly have a point....