Even at the MLB level when a guy gets on first base, the coach tells him how many out there are, reminds him to let the liner go through before running if there are less than 2 outs, tells him to run on contact if there are 2 outs etc. if the guy is a base stealer, he will be told the pitcher's time to the plate. They say these things for a reason. If this information isn't continuously provided, they will forget how many out there are etc. There is a reason why the pitcher and his middle infielders decide who is going to take the throw at second base when a runner gets on first with less than two outs. It isn't a big mystery which guy will take the throw, but they need the reminder. I saw a pitcher the other day, lead the second baseman for that throw, but the SS was covering and a DP ball was botched. Good coaching would also have instilled in the pitcher that if he is unsure who will be covering second base that he should throw the ball directly over second base and one of the fielders will get there. The pitcher in question didn't get the memo and threw the ball to the second baseman near his position and not over the base. Major leaguers need to get reminded of these things constantly.
Major league coaches and managers are supposed to go over game situations and ask players what they are supposed to do in those situations. I remember a story about Tommy Lasorda having one of those sessions with his team. He set up a scenario with the game on the line, runners on the bases and less than 2 out. He looked at Pedro Guerrero a notoriously bad fielding 3B and asked him what he is thinking in that situation. Guerrero answered that he is hoping that the ball is not hit to him. Lasorda pressed the matter asking him what else is he thinking. Pedro answered that he was hoping that the ball isn't hit to Saxy (i.e. Steve Sax) either. Lots of laughs, yes, but these sessions are supposed to occur at the MLB level.
CP, I think you agree with me that repetitive bone head plays in the field and on the bases falls on the coaching staff. That stuff just can't be happening on a regular basis at the MLB level.