In the era before smart phones or even PDAs, data either resided in your brain or as marks on paper. I obviously hadn’t memorized a stack of numbers, and my notes weren’t with me. Things will happen that even the best plans will not be able to forestall. It’s not that a person can’t allow themselves to feel frustrated or even angry about circumstance. It’s that an experienced person can learn how not to let those feelings completely overshadow everything else.