Then again, in theatre, "going up" means forgetting your lines. And, as Shakespeare famously stated in As You Like It, "All the world's a stage and all the men and women merely players" (Act 2 scene 7)
So, my theory is that it's really a mystic, cryptic message that questions reality. (Most old theatre goers likely missed this point their first time around or have simply forgotten it.) I have a folder on it that I've been adding bits and pieces to since high school drama class. I have discussed it in intricate detail with seasoned thespians. I'm going to write a novel using the contents if I ever get the time. (Retirement is so time consuming.) I'll probably call it something like The DaWaynchi Code. Kind of a mystery, thriller, enigma type piece. Maybe I'll use a nom de plume to avoid personal controversy. Something like Butch Paisley. I'm not sure yet. I get a lot of private emails of encouragement.