Q:There are two types of impairments in murderers: 1) is an impairment that leads to lack of blood flow to the prefrontal cortex 2) is a virtual "temporary insanity" that occurs when the amygdala overwhelms the brain and the prefrontal cortex is unable to respond. In other words, uncontrollable anger can lead someone to "black out" and murder someone, and it has happened. Most murders fall into the former. Cyst growths can also lead to murderous aggression, but that isn't too common.
Ok, that still doesn’t support your claim that EVERY time a murder occurs it was due to an un-changeable, irreversible, cognitive impairment. Just because sometimes there is a lack of blood flow to the prefrontal cortex that leads to murder and sometimes the amygdala overwhelms the brain does not mean that every single time a person unjustly ends the life of the other that they unequivocally fall into those two categories. And nothing about this suggest a fatalist perspective that it is entirely unpreventable and unchangeable. Not to mention that this tangent is so far from the point that I’m not even sure why I humored you this far.