simple truth is

“The simple truth is that humans became better predators because they were predators to begin with.  The fact that there were larger predators doesn't change that.  The fact that humans could also serve as prey doesn't change that. … Humans have long held the capacity to kill, just as most primates have and that they were not the peaceful, passive creatures that Sussman would have you believe.  In fact, what should come as no surprise, is that they were and continue to be just like every creature that has ever lived, being both predator or prey depending on the circumstances.” - Science20.com Gerhard Adam, April 10th, 2013

Comment: Predator, prey or predator and prey; all dependent on the individual and their status within the hierarchy of the group dynamic. What our functions are in that group setting and all of it geared toward survival. Survival that has devolved into a contest rather than actual life and death. Seldom do we encounter such things except in rare situations but the social oriented ego pride driven status quo setting of the tribe still effects us all but resolutions tend to be the posturing we do to establish ourselves within the tribe or social group. Seldom does it end in asocial violence with death or great bodily harm on the table.