The human brain is a conservative organ that comprises different systems with varying degrees of conscious awareness, which evolved in three basic stages of human history (the lizard-squirrel-monkey brain.) In my understanding, we could say, the brain has strong needs for understanding, order, predictability and meaning. In fact, one of its key functions is to process experiences, and predict what the world is like, in order to maximize survival.  CNVC Certified Trainer Stephanie Bachmann Mattei explores the biological basis of our inner jackal voices.