科研之友
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摘要
<正>"Their research has substantially improved our ability to answer key causal questions,which has been of great benefit to society.(三位经济学家的研究极大提高了我们对社会认知的因果分析能力)" ——Peter Fredriksson, chair of the Economic Sciences Prize Committee(彼得·弗雷德里克松,诺贝尔经济科学奖委员会主席).
