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当然,公私协作一直是过去250年中经济学的核心。开创经济学的亚当·斯密抱有乐观的信念:一只看不见的手会解决大部分协作问题;但干预时代的经济学家们发现了各种市场失灵、信息不完美和激励问题,这给了规则、监管和其他形式的政府和社会干预兴起的空间。今年的诺贝尔经济学奖被授予奥利佛·哈特(Oliver Hart)和本特·霍姆斯特罗姆(Bengt Holmström),以表彰他们对契约理解的贡献。契约是私私协作的基本机制。


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