Land bridges were everywhere during the extinction, many species were spreading, and there were many diseases.
But the relationship of morality and power is a very subtle one. Because ultimately power without morality is no longer power.
I want to know if I look up a whole lot of books about some form of cancer that that's not going to get to my insurance company and I'm going to find my insurance premium is going to go up by 5% because they've figured I'm looking at those books.