You know, for example, that chimpanzees have a tribal outlook and that chimpanzees will patrol the borders of their tribes looking for chimpanzees who aren't of the tribe and when they find them, they will tear them into pieces. And so that was revealed by Jane Goodall in the 1970s. It was very shocking to everyone when that was first discovered because there was a very influential line of thinking, mostly derived from people who were influenced by Russo that human beings were innately good and that only culture made them cruel and capable of atrocity. But the fact that the chimpanzees patrol their borders and tear apart their enemies really did that theory in a very serious way. So at least made it more complicated. So,