I agree with this, however I do feel compelled to expand upon it. A level types really only like to hang around A level types. Being a B or C player in a room

I agree with this, however I do feel compelled to expand upon it. A level types really only like to hang around A level types. Being a B or C player in a room full of high achievers can at times be downright (if not outright) unpleasant. If I had my druthers, I'd choose to be the 2nd dumbest person in a given room. Being an order of magnitude or two behind the mean is more demotivating than educational.