In control line precision aerobatics we have skill classes: beginner, intermediate, advanced and expert.  Beginner flies a simplified pattern.  The other three classes fly the same pattern, but at different levels of  competence. I'm a mid-level advanced flier and will never be any better.  I've judged all the classes and they break out pretty well.  Everyone in the world knows things that I don't know.  I have learned things from all levels of competence.