1930年，当凯恩斯的著名预言预测人类的“经济问题，即生存斗争”有可能“在一百年内得到解决，或至少看到解决办法。
John Maynard Keynes was not off by much when he famously predicted in 1930 that the human race's “economic problem, the struggle for subsistence," was likely to be “solved, or be at least within sight of solution, within a hundred years."