translation.en: While their brains were having an advantage from being able to copy -- lighting fires, keeping fires going, new techniques of hunting, these kinds of things -- inevitably they were also copying putting feathers in their hair, or wearing strange clothes, or painting their faces, or whatever.
translation.zh: 当他们的大脑具有复制的优势-- 点火，让火种延续，打猎的新技术， 这些事情-- 不可避免地他们也复制将羽毛带在头上， 或者穿奇怪的衣服，或者在他们的脸上绘画， 或者随便什么。