That maybe somewhat true but when it comes to pitching, managers need to know when to take one out or not. Of course if you ask any pitcher if they are still ok after giving up 5 runs or so, they will always want to stay in unless they get injured durinig the game. We need managers to "make the call" on them to try to ensure that the team can win games. Im sure there are other areas as well but thats the best one I can sum up.