In chapter 1, New Media in Art by Michael Rush mentions a performance of beating a guitar on themselves until it disintegrated. And this reminded me of David Blaine when he would perform his extreme isolation meditation. Like with the ice tomb, standing 100-foot high, 22-in wide pillar, submerged in water and buried alive. He did these while filming for a tv show pushing his limits of the audience reactions. Another trick that comes to mind is the ice pick through the hand or arm in front of people. There is this raw emotion of disgust with doubt because that it can't be real? Right?