I love the idea that we evolved from great apes and at some point our species was much closer to our ape ancestors than it is now. I am shy with a skittish personality but I also have an explosive temper. It is obviously a remnant of some wild personality trait that people needed to survive in a world ruled by predators like saber-tooth tigers. It comes from an old part of the brain that regulates our fight or flight response. I also have Celtic genes and they are one of the few European peoples not beat into submission and tamed by the Roman legion. I know my father had it. He had a placid personality but he was quick to anger if wronged and he would go nonlinear if he was pressed. This is a cartoon caveman with a club. He is living somewhere up there in my head.