I have no idea what that last post is trying to say, aside from the last paragraph. . .

And nothing that you said even contradicts my point. Yes, DPS is meant to be a group effort. If I notice that one member of the group isn't pulling his weight, it's my duty as a member of the group to help him, is it not? How am I supposed to do that if I can't tell what he's doing wrong? Or worse, what if I can tell that *someone* in the group of four needs to improve, but not which of the four? Am I supposed to record our attempts until I can figure out which player needs help? When there's no guarantee that the issue would even present itself to a recording?