Clinical research about whether violent content can desensitize the brain to violence, making a person more likely to commit some atrocity, is varied and uncertain.
Years of exposure to that sort of thing undoubtedly desensitize young people -- and particularly young men -- to killing and violence by blurring the line between what is real and what isn't.
These tools allow us to accomplish so much with so little yet they can also desensitize us in a way that puts our businesses and more importantly our humanity at risk unless we start to pay closer attention.