以效用函数诠释爱情,用契约理论解析婚姻,是自上世纪下叶经济学盛行以来,西方经济学家们所作的无边界尝试。而现实中的饮食男女也早已从难测的世事、不古的人心中悟出了爱情效用递减的规律,首肯了婚姻即契约的判断,并在经济学家尚未给出最优的婚姻契约模型之时,就身体力行起来:越来越多的人在婚前订立契约,试图在那场充满了不确定性的婚姻博弈中使自己 To use the utility function to interpret the love and to use the contract theory to analyze the marriage is the borderless attempt made by western economists since the economy of lower leaf in the last century. The reality of the diet of men and women have long been unpredictable from the unpredictable world, realize the diminishing law of love, approved the marriage that contract judgment, and economists have not yet given the optimal model of the marriage contract At this moment, more and more people make a contract before marriage, trying to make themselves in the marriage game full of uncertainty