Governments take money from here and distributes it there. Michael Pettis discusses difference between China, the US, Japan and Europe in a series of Tweets.China's Aging DemographicsConsider the following series of Tweets by Michael Pettis at China Financial Markets.China had great demographics between the 1970s and until about a few years ago, when the working share of the population surged from the mid-50s (below the global average) to the low 70s (well above the global average).Now that the working share of the population is set to decline quite rapidly, mainly because of a surge in retirees, this should put upward...