Do you mean in the philosophical sense or...?
The thing on this... plurk thing.
A rating system, I suppose. Much like leveling.
As in getting stronger and learning new skills.
Doesn't everyone do that?
What do they do with themselves then/
Well...they get stronger and learn new things...but it is...different from leveling.
[And about then Anders is suddenly engulfed in a surge of bright light as he pops a level because what is the fourth wall?]