Scary as it seems, I know a few people like that.Psychopathy is a personality disorder that has been variously described as characterized by shallow emotions (in particular reduced fear), stress tolerance, lacking empathy, coldheartedness, lacking guilt, egocentricity, superficial character, manipulativeness, irresponsibility, impulsivity and antisocial behaviors such as parasitic lifestyle and criminality.
What profession do you suppose has the most and the least psychopaths in their rankS? You might be surprised to see the list - then again, you might not.
PSYCHO PRO: http://time.com/32647/which-professions ... he-fewest/