To those ends, every chapter has been revised and updated. The more significant changes include a new introduction to general equilibrium with contingent commodities in Chapter 5, along with a simplified proof of Arrow’s theorem and a new, careful development of the GibbardSatterthwaite theorem in Chapter 6. Chapter 7 includes many refinements and extensions, especially in our presentation on Bayesian games. The biggest change – one we hope readers find interesting and useful – is an extensive, integrated presentation in Chapter 9 of many of the central results of mechanism design in the quasi-linear utility, private-values environment更重要的变化包括在第5章中新引入了与或有商品有关的一般均衡，同时简化了阿罗定理的证明，并在第6章中对吉伯德、萨特斯韦特定理进行了新的仔细发展。第7章包括许多改进和扩展，特别是在我们对贝叶斯博弈的介绍中。最大的变化——我们希望读者会觉得有趣和有用——是在第9章中对准线性效用、私人价值环境中机制设计的许多核心结果进行了广泛、综合的介绍