Reply #7: I read an article on ESPN of all places about the absurdity of going back 85 million years [View All]

[charlie and algernon]

For one, having humans start soo far back will change things so much that there may be no need to back in the first place, so the time travellers disappear. Or the time travellers may realize that, so they make it that humanity experiences the same problems, thereby justifying the time travellers' existance.

But the other point was that by giving humans now 85 millions years of evolution, the human race started by the time travellers could be SOOOO advanced and different that they would be unrecognizable to you and me.