translation.en: 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.
translation.zh: 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。