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erred to as Paretooptimality. It means that it would not be possible to change it so as to make someone better off without others being worse, given the resource and technical constrain. ? The Paretoefficiency is the triplicity of Productive Efficiency, Productmix Efficiency and Exchange Efficiency 2 Summary III ? The simplified rules to evaluate the efficiency is “MSB=MSC”. We can prove that the freemarket system can induce the efficiency oute. ? We can’t get consensus on the equity problem: utilitarianism。 Rawls39。 Sen A.’s Theory. Lorenz curve and Gini coefficient are the methods to indicate the status in quo of the justice of distribution. 3 ? Efficiency and justice are conflicted in some ways and coincided in others. Though freemarket can get the efficient oute, it can’t turn up trumps in justice. So, The public policy should trade off between efficiency and justice. Summary IV 4 產(chǎn)品市場 要素市場交換 牛郎 市場效率的一般均衡分析 KN 織女 KZ LN LZ 稻谷 衣服 實現(xiàn)組合效率 實現(xiàn)生產(chǎn)效率 實現(xiàn)交換效率 瓦爾拉斯均衡 不動點定理 5 P O Q