Our glasses weren’t 3D. We were watching a live performance inside downtown L.A.’s Mayan Theatre and, like the robot on stage told the crowd on Sunday afternoon, that’s already 3D. These were decoder glasses. Some in the audience had blue lenses. Others, like me, had red ones. The color of the lenses determined what you would see on the screen behind Satanic Puppeteer Orchestra, the human-and-robot duo from San Diego who were playing as part of Exotikon.