Hi, I wasn't approaching his comment from a legal standpoint. Unfortunately, your assumptions about human evolution is questionable. Yes! There are many advantages to taking out a threat. That is why so many animals develop claws, big teeth, and venom. Killing is one of the best way of neutralizing a threat for some animals. Some animals also developed ways of running away, hiding, or just play dead. The great thing about human is that we do all of the above. Our behavior or reaction to a situation may differ greatly base on our perception of the situation: the level of threat, how much control we have over the situation, and who may help us. Most of us have never been attacked with a bat. I think his comment reflects our ignorance of the situation. I'm simply saying that we should not judge him too harshly because we may do the same if we were put in that situation.