Just look at what’s happening in Italy, where homebound adults are posting mini-manifestos on Facebook, while restless kids flock to multiplayer online games like Fortnite. Or see what’s happening in China, where would-be partyers have invented “cloud clubbing,” a new kind of virtual party in which D.J.s perform live sets on apps like TikTok and Douyin while audience members react in real time on their phones. Or observe how we’re coping in the United States, where groups are experimenting with new kinds of socially distanced gatherings: virtual yoga classes, virtual church services, virtual dinner parties.