If everything has to be about superlatives, then that would be lame. Sometimes, you don't need to spend your time trying to discriminate what is the best, the greatest, or what not. That ought not what art should be limited to. Sometimes it is about discovery, to wonder and think about how certain subjects can be talked about. It is why I link to songs in other languages: to push the envelope on what the subject matter is about. There are some universals yes, and in that opportunity you learn about new styles or what not. It is why I link to instrumentals, as artists try to establish their style against concepts we know of.
Numbers and letters are likely not to be explored as they are words to describe procedures for which they have been defined and punctuated, and require a syneasthetic arbitrariness to import their meaning.