I voted yes, and then when trying to explain why, I came to a decent contradiction: You have all of these types of 'evil' - extreme brutalities, sadism, masochism. They all seem to be related to either physical or mental incapacities. I guess I could be somewhat shortsighted, but here goes - brutality is often a result of adrenaline. There are cases of (they just happen to be in Iraq because they're recent) of soldiers listening to Ozzfest CDs while facing off with insurgents and killing much more than necessary. Both sadism, well, any sort of psychosis in general can typically be connected with either a chemical imbalance, mental incapacity, or some sort of 'environmental' affect. Dunno, maybe I'm grasping at straws.