I got into a conversation last night about the changes that have happened to the human species, but neither of us knew enough to talk sensibly about it.
The question we ended up asking ourselves is what would happen if someone traveled in time back to the beginning of Homo sapiens sapiens, stole a very average female infant, brought her back to our time, and raised her in Ohio? (Ignoring any time paradox or stuff like that.)
Would the child grow up to be completely undifferentiated from her peers?
Mainly, we wondered how tall she would be, given modern food sources. She would probably be lactose intolerant, right? Would there, or could there, be other foods she would be unable to eat? Are there nasty bugs that we’re resistant to that she wouldn’t be? Would she tend to put on weight as easily, or more easily, than her peers?
Are there obvious things I’m forgetting (I assume so)?