This brings us to a clarifying fact of neurochemistry: the brain works one way in the peripersonal space and another way in the extrapersonal space. If you were designing the human mind, it makes sense that you would create a brain that distinguishes between things in this way, one system for what you have and another for what you don’t. For early humans, the familiar phrase “either you have it or you don’t” could be translated into “either you have it or you’re dead.”