Think about it like this: that good/bad chemical system is really good for a relatively stable enviornment. But if your environment becomes unpredictable, harsh, and chaotic, you can't develop chemical dependencies towards certain actions. Like my animalistic brain doesn't understand that a man with a gun will kill me; my logical side TELLS it that thats bad. So the brain ended up developing a more comprehensive approach to making decisions; it stored more information from the past, remembered that information more, grew more awareness to its surroundings, overall gained more cognitive power.

Description: