No offense to the good discussions here, but this article is no more than a press release. It doesn't even directly address the question in the title! Again no

No offense to the good discussions here, but this article is no more than a press release. It doesn't even directly address the question in the title! Again no disrespect to the talk here, but this is a Stack Exchange kind of question, and lo there is an SE answer: https://biology.stackexchange.com/questions/653/why-20-amino-acids-instead-of-64 https://biology.stackexchange.com/questions/653/why-20-amino...