河内的法国殖民政府曾经颁布过一条法令:人们每交出一只死老鼠,政府就给他发钱。政府这样做本是想控制鼠灾,但这条法令却导致人们养殖老鼠。1947年,当死海的卷轴被发现时,考古学家们悬赏收集每一张新发现的羊皮纸手稿。结果,为了增加手稿数量,那些羊皮纸被撕碎了。同样的事也发生在19世纪的中国,当悬赏征购恐龙骨时,农民们会将挖出的完好恐龙骨砸碎,再去领赏。 The French colonial government in Hanoi had promulgated a decree: People gave him money every time a dead rat was handed over. The government did this to try to control the plague, but the ordinance led to people raising mice. In 1947, when the scrolls of the Dead Sea were discovered, archaeologists offered a reward for collecting every newly discovered parchment manuscript. As a result, those parchments were torn to increase the number of manuscripts. The same thing happened in China in the 19th century. When the bounties were bought for sale, peasants smashed the dug up the intact dinosaur bones and went to reward them.