My biology teacher theorized that the reason humans survived over all hominids is our aggression. We are so aggressive that any threat is met with the complete

My biology teacher theorized that the reason humans survived over all hominids is our aggression. We are so aggressive that any threat is met with the complete destruction of the aggressor. We kill first and ask questions later. Add the ability to work in groups and there's nothing that can beat us as a species. Well, except ourselves. We are going to be the creators of our own demise.