"Quality" may be hard to pin down in super-objective terms, but that doesn't mean it has no value as a word or a concept. To paraphrase, "Quality is like art. I

"Quality" may be hard to pin down in super-objective terms, but that doesn't mean it has no value as a word or a concept. To paraphrase, "Quality is like art. I know it when I see it." Sure, you and I might have slightly different ideas of what quality is, but in various fields, we find established consensus on these matters. I happen to know a little about music. But surprise, surprise, while I listen to Bach, I also listen to Cameo. Nothing wrong with that, but I don't presume that Bach's music can't be considered of higher quality just because it's hard to write an algorithm to score quality, or just because Cameo were more popular than Bach in the 80s and early 90s.