The economist JK Galbraith observed, forecasters typically come in two kinds: those who don't know and those who don't know they don't know.
经济学家J·K·加尔布雷思（JK Galbraith）指出，预言家通常有两种类型：“不知道”和“不知道自己不知道”。
The economist JK Galbraith observed, forecasters typically come in two kinds: those who don't know and those who don't know they don't know.
经济学家J·K·加尔布雷思（JK Galbraith）指出，预言家通常有两种类型：“不知道”和“不知道自己不知道”。
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