And every time I hear this, I can't help thinking that even back in the Stone Age, there must have been a group of cavemen sitting around a fire one day looking very grumpy, and looking disapprovingly at another group of cavemen rolling a stone wheel up and down a hill, and saying to each other, "Yeah, this wheel thing, cool toy, sure, but compared to fire, it will have no impact.
每次我听到这些的时候，我就忍不住想： 即使在石器时代， 肯定也有那么一群洞穴人 某一天坐在篝火旁， 看上去有点生气， 不悦地看着另一群将一个石轮子 在山上来回滚动的洞穴人。 并互相说： “这个轮子的东西， 不错，是好玩，但是和火比起来， 肯定用处不大。