Ok, I admit that such a player is essentially not even in the game. Still, I'd would like to think that I would do my best to offer advice and (very) inexpensive help before kicking them. And asking someone to sub in for that player would be a rather tough sell. I'd be curious as to why they are doing what they are doing, what exactly their thinking is. It may simply be that they've never played before, or perhaps it's someone's young child
