有个从未管过自己孩子的统计学家,在一个星期六下午妻子要外出买东西时,勉强答应照看一下4个年幼好动的孩子.当妻子回家时,他交给妻子一张纸条,上写:“擦眼泪11次;系鞋带15次;给每个孩子吹玩具气球各5次,每个气球的平均寿命10秒钟;警告孩子不要横穿马路26次;孩子坚持要穿过马路26次;我还想再过这样的星期六0次.” A statistician who had never managed his own child promised to take care of 4 young and active children when he had to go shopping on a Saturday afternoon. When his wife came home, he handed him a piece of paper. Article, wrote: “Wipe the tears 11 times; tie 15 times; give each child 5 times a toy balloon, the average life span of each balloon is 10 seconds; warn the children not to cross the road 26 times; the child insists on Cross the road 26 times; I would like to go on this Saturday again.”