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老鼠的速度到不了时速500千米,是因为它们自己不愿意跑这么快!因为跑的太快,它们失去的可能会比得到的更多。生物在进化过程中可能会得到某些方面的优势,但是同时在其他方面也会付出代价,它们必须权衡得失。如果一个老鼠的奔跑速度能达到时速500千米,恐怕没有什么动物能够捕捉到它了,它具有了不被捕食者捉住的优势,但同时,它的身体里要储备相当多的能量,来供给自己风驰电掣般的奔跑,这些能量可能原本是用于繁殖后代的。假如普通老鼠一年能繁殖10只小老鼠,“超级老鼠”一年可能只能繁殖2只老鼠,综合起来,高速老鼠不一定会比普通的老鼠的子孙更多。
Rodents can not reach speeds of 500 kilometers per hour because they do not want to run so fast because they run faster than they can get more than they can get. Creatures may gain some advantage in evolution, but at the same time they also pay for it in other ways, and they have to weigh gains and losses. If a rat can run 500 kilometers per hour at speed, probably no animal can catch it, it has the advantage of being caught by a predator, but at the same time it reserves considerable energy in its body to To provide their own power-driven run, the energy may have been originally used for breeding offspring. If a normal mouse can breed 10 mice a year, “super mouse” may only grow 2 mice a year, and in summary, high-speed mice will not necessarily have more children than ordinary mice.