Chapter 10- Sexual Evolution

Sumner's theory on sexual practices of early humans and Neandertals and why they didn't reproduce is pretty interesting. I think the chimpanzee theory and how they were more closely related to earlier humans makes sense. If chimps don't reproduce for fun, then maybe early humans had the same mindset. Nobody really enjoys doing things that aren't at least somewhat fun. Secondly, he says that both sexes of Neandertals had similar physical characteristics and may have been indistinguishable from one another when fully clothed. Just a wild guess, but I don't think any of us would sleep with something if we didn't know what it was. I think these types of things show us why early humans didn't reproduce with Neandertals.