This is something that the nimblest standup comedians learn, over time, to handle gracefully. They'll go between prepared material, then they'll respond to what's happening in the room and weave it back into the prepared material and so on.
John HodgmanThe very idea that there is no truth, but only the filter of narrative through which truth is invented is something I learned at the feet of the most leftist professors at Yale and am learning again from Sarah Palin during the Vice Presidential debate, and I find that very disorienting.
John Hodgman