Tank disrespect.

[JonBigwood]

Not everyone is a winner, not everyone is going to be good enough to play every class. Some players just don't have the capacity to excel at certain jobs and no amount of training or "help" is going to get them to the level they need to be at.

We are speaking here about normal dungeons, not the hardest end game instances, so you can expect practically any player to reach an adequate play performance in any class or job, with practice and a will to learn. You can't expect people to do things right at the first try.