Three problems with this: First, Harris has a degree in philosophy, so he has had your "Ethics class"; Second, you sound exactly like those religious nutjobs

Three problems with this: First, Harris has a degree in philosophy, so he has had your "Ethics class"; Second, you sound exactly like those religious nutjobs that attacked Dawkins for "The God Delusion" because he didn't know theology. Third, "Statistically that child has a 90% chance of turning into someone who does great harm to human beings." is almost certainly a bogus claim reasoning from that we know most psychos started by tormenting animals to the unjustified claim that most who torment animals go on to harm humans. Unfortunately, I can't remember the name on the fallacy right now.