Evolutionary Psychology suggests that some of our traits are inherited from our ancestors whether langauge or survival instinct or adaptation but some of our behavior can be explained by looking back at how our ancestors survived. These traits were the root of natural selection.
Chad refers to how violent some of the times were in the past decades and truth is some of our ancestors will only survive for a while because they would die in wars or other violent actions, so their life was shirt lived they would only live for a moment
