I think mental mistakes (I won't all them errors) fall into 2 categories. If a fielder break wrong on a ball I don't think that should be an error. They have to make a split second decision in order to be successful and sometimes don't do it right. On the other hand a routine fly ball that is just misjudged is a different story. It should be an error if it's right to you and you have plenty of time to get to and just move in 2 steps to far. That's a far cry from getting a wrong jump on the ball. The one thing that I think is really wrong is not having a team error. It makes no sense that a popup that every infielder could have caught but no one does is a hit. If 2 OF both could catch ball and it just drops the same thing. I am sitting next to the official scorer this year for a minor league team. I'll be interested to see how he scores plays.It SHOULD be an error, but by convention it's a double. From what I can tell from the official rule book, you COULD (and in my opinion should) record it as an error because (to summarize) the out could have been made by an ordinary player with ordinary effort. This is never done though. I don't know why. Misplayed balls should be errors. As per MLB, "A fielder is given an error if, in the judgment of the official scorer, he fails to convert an out on a play that an average fielder should have made." and as per NCAA, "it is not necessary that the fielder touch the ball to be charged with an error. If a ground ball goes through a fielder’s legs or a pop fly falls untouched and, in the scorer’s judgment, the fielder could have handled the ball with ordinary effort, an error should be charged."