We aren’t overwhelmed by anger whenever we are frustrated; only when we first believed ourselves entitled to a particular satisfaction and then did not receive it. Our furies spring from events that violate a background sense of the rules of existence. And yet we too often have the wrong rules. We shout when we lose the house keys because we somehow believe in a world in which belongings never go astray. We lose our temper at being misunderstood by our partner because something has convinced us that we are not irredeemably alone.