Chapter 6

Chapter 6 is all about human evolution. I thought this chapter was very gripping; seeing how things that we take for granted (like bipedalism and the ability to touch our thumb with our pinky) have had such huge effect on the course of our evolution was fascinating. It's very strange to think that something as small as that is the reason why humanity is where it is today. There are some things I'm a bit confused about; the chapter talks about increased protein consumption fueling brain growth, but I don't understand how this would have been passed down and proliferated throughout the species.