Humans are still primed to detect threats and dangers that no longer exist -- think of the cold sweat when you're stressed about money, or the fight-or-flight response that kicks in when your boss yells at you. Our safety is not truly at risk here -- there is little danger that we will starve or that violence will break out -- though it certainly feels that way sometimes. We have a choice about how we respond to this situation (or any situation, for that matter). We can be blindly led by these primal feelings or we can understand them and learn to filter them. Discipline in perception lets you clearly see the advantage and the proper course of action in every situation -- without the pestilence of panic or fear.