The Equality of the Differences-Sen's Critique of Rawls' Theory of Justice and Its Implications for Welfare Economics-
研究了森对罗尔斯正义理论的批评，指出用能力指数替代社会基本品指数会改变分配规则和社会选择规则，并探讨了这种替代对当代福利经济学方法论的影响。
This paper studies an alternative methodology in which injustice can be more central by examining the implication of Sen's criticism of Rawls' theory of justice in the context of welfare economics. We have seen that, first, taking a step forward from "justice as fairness" may not belie the background thoughts of Rawls theory on the equality of differences, second, Sen's criticism of "justice as fairness" is closely related to the methodology of the "new welfare economics". To replace the index of social primary goods by the index of capability changes the formulation of distribution rules as well as the formulations of social choice rules. These two issues are actually the two poles of the "new welfare economics". The underlying purpose of this paper is to give an overview of the reach and the possibilities of welfare economics today.