Some practical men do not like the idea of a thought experiment. Yet these exercises are an essential part of the growth of human knowledge. Indeed, today’s address by Ben Bernanke at the meeting of central bankers in Jackson Hole, Wyoming, makes it appropriate for one such experiment: to ask what would happen if, in the main industrial countries, currency notes were to drop from helicopters as a deliberate act of policy?
一些关注实际的人不喜欢思想实验。但这种实验是构成人类知识增长的一个关键组分。实际上，本•伯南克(Ben Bernanke)日前在怀俄明州杰克逊霍尔(Jackson Hole)央行会议上的讲话，就使得下面这个问题很适合用来做这样的实验：如果作为一种有意的政策行为，主要工业化国家纷纷“从直升机上撒钱”，那会发生什么情况？
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