translation.en: So basically what I didn't tell you is that about 500 million years ago, organisms starter making materials, but it took them about 50 million years to get good at it.
translation.zh: 所以基本上我没有告诉各位的是 大约五亿年前，生物就开始制造材料， 大概花了五千万年变得擅长于此。