It's a regurgitation of something Scott Adams (Dilbert cartoonist) has said for years. In Adams' case his example is that he wasn't the greatest artist in the w

It's a regurgitation of something Scott Adams (Dilbert cartoonist) has said for years. In Adams' case his example is that he wasn't the greatest artist in the world, he wasn't the funniest joke writer in the world, but he was ok at both and combined they made a cartoon that was very successful. I guess you could just look at "cartooning" as a single skill in itself, but that's the idea.