Three hours a day is quite enough,” wrote John Maynard Keynes in his 1930 essay Economic Possibilities for our Grandchildren. The essay continues to tantalise its readers today, thanks in part to a forecast that is looking magnificently right — that in advanced economies people could be up to eight times better off in 2030 than in 1930 — coupled with a forecast that is looking spectacularly wrong, that we would be working 15-hour weeks.
约翰•梅纳德•凯恩斯(John Maynard Keynes)曾在1930年的一篇短文《我们子孙后代的manbetx20客户端下载 可能性》(Economic Possibilities for our Grandchildren)中写道：“每天3小时就足够了。”这篇短文现在仍吸引着读者，部分原因是一项看上去极其正确的预测：到2030年，发达manbetx20客户端下载 体国民的富裕程度可能会达到1930年的8倍，还有一项看上去极其错误的预测：我们将每周工作15小时。
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