translation.en: So, with that little bit of technology, humans went from a small band of 10,000 or so -- the same number as Neanderthals everywhere -- and we suddenly exploded. With the invention of language around 50,000 years ago, the number of humans exploded, and very quickly became the dominant species on the planet.
translation.zh: 所以，应用很少的技术， 人类就从大约1万少数人发展起来， 同等于那时遍布各地的尼安特人的数量， 我们发明了语言，突然人口爆炸了， 大约5万年前， 人口数量呈爆炸式发展， 非常快地就变成了这地球上的主宰者。