Lex, you should look into primate behavior. There you will find your answers to human nature. Robert Sapolsky is a great start. A young woman (Erika who does podcasts as Gutsick Gibbon is another person you should have on your podcast. You might find out that humans are not apart from the animal kingdom as Jewish religious tradition would have you believe. We are simply somewhat higher evolved primates. Your questions about evil, violence, all of it, are easily explained by the reality of nature and not the make-believe of religion. You do great stuff, for an engineer!