Well not sure exactly what he's trying to discuss since he gives no real specifics and keeps everything vague, but I've certainly seen plenty of people with soulless eyes who act more like rabid animals and/or machines, what has always struck me the most are those with an intense malice in their eyes but nothing else, no perceivable intelligence or depth, just malice in a void, and the crazy eyes, so intense yet devoid of anything recognizable as uniquely human, and those with the lifeless eyes who just mindlessly regurgitate what others say but can't explain their words because they have no thoughts of their own, there certainly has to be something to all that