According to Calvinists, this young man was predestined

by God to be a killing machine. According to materialists,

this young man was determined by the laws of physics to be a

killing machine. According to believers in free will, this young

man chose to be a killing machine. So, any way you slice it,

this man is a killing machine. And you won't have much time

to ask him why he is a killing machine before he kills you.