Without analyzing every single word of the song, I just wanted to throw in my thoughts to anyone who is interested.
Based on things I've heard Maynard say about drugs, I believe the song is about how people use drugs for enlightenment but ultimately, when they come down, they forget most of the things they discovered or realize that the drug induced thoughts do not translate into real life.
Thus, the main character in "Rosetta Stoned" is captured by aliens and given this incredibly important information but when he returns, he realizes that he can't remember all of the meaningful things that he experienced.
Just my simple look into the meaning of the song. I apologize if this idea has been brought up before as I haven't been able to sift through all of the posts.
To be honest, I really didn't like this song at all when I first heard the album but now it has become one of my favorites.
That is a pretty good idea. And also we see when the character comes down, he feels horrible, and he shit his bed. Showing that while you may feel enlightened and great during the experience, the aftermath can be earthshatering.
__________________ Argument spawns creativity and moves us forward,
Insult spawns negativity and gets us nowhere.
Actually, OP, I think you nailed it. Rosetta Stoned and Lost Keys are songs of lost patience, disgust, and defeat for tool. All these things people could learn from, but they forgot the most crucial variable and don't really give a shit