“外部性”的争议

On "Externalities"

尽管"外部性"概念及相关理论已被写进经济学教科书,并成为现代经济学中许多研究领域的重要的甚至是基础的概念,然而,"外部性"概念不仅与经济学的基础假设间存在着逻辑矛盾,而且所谓的"外部性"可以由"交易费用"等概念更好地加以分析和表达。因此,在一个本应逻辑一致的概念体系中,"外部性"概念的存在并没有多大的价值。

As a part of economics textbook and an important concept in many fields of today＇ s economics, the concept and theory of “externalities” is inconsistent with the basic hypothesis of economics, and it can be explained by the concept of transaction cost. Therefore, it is of little value for the concept and theory of “externalities” to exist in the system of economics.