The average lottery buyer buys about 150 tickets a year, so the buyer knows full well that he or she is going to lose, and yet she buys 150 tickets a year. Why is that?
一个普通的彩民一年要买 大约150张彩票， 这个彩民其实完全知道 他是会输掉的， 可还是会每年买150张，为什么？