Is Virgil an Improvement or Not?

The notion that the arts progressed in some sor ways that beconse tings ae later. They must either be worse or better, but you c not say wich than something earlier. In what sense are the improvements o mo sense? Are they dim diminutions of them, or or retrogression from them? But nevertheless, culturas, it's very difficult to talk like this. You can speak of certain problems being solved less or more successfully - as between perhaps rather vaguely demarcation.