The bigger the audiences for Dutch comedian Micha Wertheim’s shows became, the less he had to do to make them laugh. In one early show, he suggested that the audience would be better off without him. So in 2016, he acted upon this suggestion with an experiment that made theater history: he wasn't physically present onstage but somewhere else. The audience wasn't aware of this in advance, though they did get a hint in the form of a pre-recorded "live" radio interview from a remote studio. "I see ...