看到一个故事,一个数学老师带着三个学生去吃饭,有个活动,消费300返30,当时已经吃了270了,但是非常难吃。这个时候,学生提议我们再点三个冰淇淋,凑够300好了,反正也一样是270。后来老师说,还是算了,然后就走了,出去以后,买了几个DQ(一种品牌冰激凌,单价20~30元)。理由是,已经吃了这么难吃的饭,就不要多吃几个难吃的冰激凌了,虽然不花钱。这就好像你花了5元钱,买了一个烂苹果,为了不浪费,还是吃掉了。这样你不但损失了5 To see a story, a math teacher with three students to eat, have an event, spending 300 back 30, had already eaten 270, but very unpalatable. This time, the students suggested that we then point three more ice cream, 300 enough to get together, anyway, the same is 270. Later, the teacher said, or forget, and then left, went out and bought a few DQ (a brand ice cream, priced 20 to 30 yuan). The reason is that already eat so unpalatable meal, do not eat a few unpalatable ice cream, though not spending money. It’s like you spent 5 dollars, bought a rotten apple, in order not to waste, or eaten. So you not only lost 5