When I was growing up in the 60's, there were 16 teams in MLB. You really had to be damn good to reach the big show. It wasn't unusual then for future major league players to spend 3-5 years in triple A. By the time a player was brought up, he knew the mental part of the game. It was very, very rare for a player from that period to learn the game at the major league level. Obviously, things have changed and they are what they are. But, please, don't try to sell me that baseball is better now than it was then.