"We keep a log on outfielders who charge the ball and who don't charge, who have accurate arms and powerful arms. We take all that into consideration. This is not a blind experiment to say hey, run until you get thrown out." - Los Angeles Angels' manager Mike Scioscia
Baserunning is often overrated. In particular, you hear broadcasters go nuts talking about the virtues of being aggressive. Most of the time, mindless aggressiveness leads to outs. In fact, it is the Angels themselves who seemed to popularize this style of play. When the won the World Series in 2002, people went bonkers over their "productive outs" approach, ignoring the fact that they pounded the snot out of the baseball in October.
I don't like the Angels. I don't like "productive outs." I don't like "small ball." Most of you probably already know this. However, this shouldn't blind one to otherwise sound research. If the Angels have a plan, and it's objectively sound, and they execute it, more power to them. The type of aggressiveness presented above isn't a bad idea at all. In fact, it's a great idea. That is the way that teams should be coaching their players. It's way better than the mindless aggression espoused by many commentators.
Someone who seeks to understand baseball can never dismiss out of hand research (as opposed to commentary) that runs counter to his or her predisposition or biases. The goal is always to incorporate new research with the old to constantly perfect the art and science of baseball strategy.