It doesn't take skill for a player that has been playing and keeping their knowledge of the game fresh like most people on here, yes. Giving someone a level 90 that is absolutely unaware of the changes made to the game or has no idea how a MMO works has to use their brain to level. It takes skill for them. And, in doing so, they learn how to play the game. The misconception of most people is that if they know how to do something, everyone knows how to do it at this exact moment. That would be a close assumption, but not exactly how things work. People are capable of knowing what you know, but there is a little factor people leave out called time. Leveling does teach you something over time, but at a certain point, you stop learning from it. It's going to be rather tough trying to do anything with people that haven't played the game in awhile or at all. I'm not for singling out these people, but I figured I should point this out.