I definitely see this song as Maynard's personal outlook on his position and his audience. Basically, he's heralded as some kind of savior, even though people always seem to confuse or misinterpret what he says, or not listen to him at all.

Rosetta Stoned refers to the fact that people take information and make it their own, and frequently become misguided; therefore, we all speak in some coded language to each other. Kind of like that scene in Waking Life that refers to people in communication. One of us says "love" and both people seem to know what the other person means, when they really don't.

This song is about the failure of human communication. It's like we're on drugs or something. We fail to interpret meaning.