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在波斯纳法官的法经济学体系中,财富最大化原则和成本一收益分析是其核心概念和基本方法。本文基于但不限于波斯纳法官的这一演讲文本,以一种语境论的视野和尽量进入普通法司法实践的精神,分别从法经济学和法律的实用主义之间的关系如何、“财富最大化”原则的内在困境何在、单向度的法律经济学是否存在理论局限性以及中国法官是否需要远离实践性的和实用主义考量这四个看似独立但却具有内在逻辑联系的问题切入,深入探讨法律经济学中的一些重要学理问题。基于此,就解释复杂多变的中国问题而言,“拿来主义”式的理论移植效果肯定不佳。我们更需要一种从人与人、人与制度、制度与制度之间的互动出发,以个体的成本一收益分析为基础,以博弈论和信息经济学为工具并以促进社会合作为目标的新法经济学。
In Judge Posner’s legal and economic system, the principle of wealth maximization and cost-benefit analysis are its core concepts and basic methods. This paper is based on, but not limited to, Judge Posner’s speech, with a contextual view and maximization of common law practice in judicial practice, respectively, from the relationship between law and economics and legal pragmatism, What is the inherent predicament of the principle of “fortune maximization”, whether there are theoretical limitations in one-legged legal economics and whether Chinese judges need to be far from practical and pragmatic considerations, which appear to be independent but have inherent logical relations Cut into, in-depth discussion of some important theoretical issues in legal economics. Based on this, in terms of explaining the complex and ever-changing China issue, the theory of “borrowing” has certainly not been effective. We also need a system based on the interaction between people, people and systems, systems and systems, on the basis of individual cost-benefit analysis, using game theory and information economics as tools and promoting social cooperation New Law Economics.