婚外情是人类一种非常态的情感活动。由于其特殊的活动形态和投入产出方法,用成本分析法加以剖析,更容易揭示其非常态性和反道德性,从而达到减少发生几率的目的,婚外情的成本可以做如下分类:机会成本。选择一种机会,就意为着放弃另一种机会,因此选择需要付出代价,这个代价 Extramarital affairs is a very human emotional activity. Because of its special activities and input-output methods, using cost analysis method to analyze, it is easier to reveal its abnormal and anti-ethical, so as to achieve the purpose of reducing the incidence of extra-marital affairs, the cost can be classified as follows: the opportunity cost. Choosing an opportunity means giving up another opportunity, so choosing has to pay a price