How about "tall and fat" (square)? I'd consider myself fairly expert in C and C++, SQL, Windows programming, UNIX/Linux in general, Delphi and a few other technologies, in that quite a few people have paid me for writing important applications using them, teaching them and writing about them.
It seems pretty clear that the model is relative to "total surface area". What you call a "tall and fat" square may be "short and skinny" relative to someone else's bar, but now we're just talking about total level of skill, which isn't really relevant.
