Agreed. And we tend to subconsciously rationalize our choices after they're made. Our minds learn to dismiss other options after the fact by rationalizing the choice we made in a way that makes it seem somehow superior. Testing and rank are part of that. I've looked at a lot of different ways instructors, schools, and associations use both, and I really haven't found a uniquely compelling argument for or against most methods. Most of them have some potential for abuse, and some potential for good. Mostly, it seems to come down to whether they are used well, and what people like. Not much else seems to consistently matter.