The Wikipedia article doesn't really discuss it, the reference is in the episode's introduction.
The episode in question features not-Marina-Abramović exhibiting not-Rhythm-0. An audience member approaches the table and picks up a weapon. Audience murmurs. Artist stands stoically. Audience member motions like they are going to use the weapon on the artist. Audience gasps. Artist's assistant protests. Artist objects to protests, then promptly collapses with mystery illness (House MD's writers had a thing for misdirecting the audience re: who's sick in the episode intros).
The episode in question features not-Marina-Abramović exhibiting not-Rhythm-0. An audience member approaches the table and picks up a weapon. Audience murmurs. Artist stands stoically. Audience member motions like they are going to use the weapon on the artist. Audience gasps. Artist's assistant protests. Artist objects to protests, then promptly collapses with mystery illness (House MD's writers had a thing for misdirecting the audience re: who's sick in the episode intros).