Andy Warhol didn't like speaking on college campuses or at societies for (frequently self-proclaimed) intellectuals. Instead, he hired an actor to portray him at many of these events. Warhol died in 1987, but his official impersonator was still alive in 2007.
Without using the exact term, both Barnum and Warhol knew that they were operating in an attention economy. Paradoxically, we do. So why are we so bad at garnering attention?