The neocortex is the part of the brain that distinguishes humans from other animals. “Neo” means “new” in Latin and, in evolutionary terms, the neocortex is the youngest part of the brain. We use it to analyze and calculate, and it is also our language center. But, it is also the part of the brain that allows us to worry about what will happen in two weeks’ time—or allows us to stay irritated about a past event.

