On Sunday, timed to coincide with President Trump’s 80th birthday, there was a massive UFC event—including a consequential match deciding the lightweight title—staged on the south lawn of the White House. The setup to this event, UFC Freedom 250, probably didn’t escape your attention, since there was so much coverage of the complex construction project that allowed for televised, regulation combat sports competition to occur on what many American politics fans consider sacred ground. There were, for instance, 494 porta potties, I’m informed. But if, like me, eleven years of Donald J. Trump at the center of American public life have numbed you to the idea that Trump is despoiling the dignity of the U.S. presidency or something, you might have had a hard time caring that any of this was happening, at any level, at all. One more screeching sound in the big screech orchestra that is U.S. politics. Well if you’re in Atlanta, Dallas, or Los Angeles, have I got a way to wake up your deadened senses: Cosm, which advertises itself as an “experiential hub.” Cosm’s domed, theater-style viewing rooms are meant to make attendees feel “completely immersed” via a proprietary concept called “shared reality.”