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Popular as Keynesian fiscal policy may be, many economists are skeptical that it works. They argue that fine-tuning the economy is a virtually impossible task, and that fiscal-stimulus programs are usually too small, and arrive too late, to make a difference.

尽管凯恩斯主义的财政政策可能很受欢迎，但许多经济学家对其是否有效持怀疑态度。他们认为，对经济进行微调实际上是一项不可能完成的任务，而财政刺激计划通常规模太小，实施得太晚，无法发挥作用。

— James Surowiecki 索罗斯基