中国永远不可能超过美国-除非改变人口政策

Forbes Feb 12, 2011, Page 16: Measuring America's Foes

....Looking ahead to the midcentury we can foresee certain welcome
adjustments. By 2050 China's population, while expected to be around
1.4 billion, will probably be dropping and have an aging profile. The
U.S. population will be more than 400 million, be steadily rising and
have a more youthful profile. It's possible, though unlikely, that by
then China's GNP will be larger than America's, but in every other
respect the U.S. economy will be well ahead, especially in high tech.

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