人人面临抉择“世上没有免费的午餐。”要有所得,必有所失。舍此取彼或舍彼取此,人们必须作出各自的抉择。学生最宝贵的资源莫过于时间,在这门课上花的时间多,在别的课目上花的时间就少。学习的时间花的多,娱乐和休息的时间相对就少。学生必须作出抉择。家庭收入如何开支?衣食住行、教育娱乐,在某一项上多花费一元就意味用在其余方面的钱已少了一元。家长必须作出抉择。在古典时期,国防开支越多,花在提高国民生活水平上的钱就越少。在当代社会,环保法迫使企业增加生产成本,致使企业利润减少。工资就可能降低,物价就会上涨。要大炮还是黄油?要环境优良还是高利润?社会必须作出抉择。社会还面临着效率和公平之间的抉择。效率指社会尽其所能从有限的资源中获取的最高收益。公平指在社会成员中公正地分配这些资源。换句话说,效率指经济蛋糕的大小,公平指蛋糕如何分配。制定 Everyone faces a choice. “There is no free lunch in the world.” If this is the case, then people should make their own choices. The most precious resource for a student is to spend more time, spend more time in this class, and spend less time in other subjects. Spend more time studying, less time for fun and rest. Students must make a choice. How to spend on family income? To live on in food, clothing and entertainment, spending more than one dollar on one item means that the rest of the money has been reduced by one dollar. Parents must make a choice. In the classical period, the more defense spending, the less money spent on raising the standard of living of the people. In contemporary society, the Environmental Law has forced enterprises to increase production costs, resulting in reduced corporate profits. Wages may be lower, prices will rise. Want cannon or butter? To the environment is good or high profits? The community must make a choice. Society is also faced with a choice between efficiency and fairness. Efficiency refers to the maximum benefit a society can make from its limited resources to the best of its ability. Fairness refers to the fair distribution of these resources among members of society. In other words, efficiency refers to the size of the economy cake, fairness refers to how the cake is distributed. Make