 And when he was talking about infectious diseases and he was talking about the microbiome, he said basically human beings were nothing more than viruses and retroviruses. And he goes, you know, and the microbiome, for example, made us evolve into being mammals. And that allowed human beings to carry a fetus. And he said, and what is a fetus? It's nothing more than a tumor that the mother's body has learned to not reject.