Looking into what's behind people who have no conscience. It appears that there has been a gradual chipping away over the years. When these people do something wrong, they avoid facing what they've done by seeking solace in drugs, drink, or making excuses for their behavior. They get away with it and feel superior. They get a rush from being bad and fooling people with their rationalizations. After years of repeating this behavior of avoidance, the conscience is chipped away at until there is little or nothing left.