What, exactly, does a social network do? Is it a website that connects people with one another online, a digital gathering place where we can consume content posted by our friends? That’s certainly what it was in its heyday, in the two-thousands. Facebook was where you might find out that your friend was dating someone new, or that someone had thrown a party without inviting you. In the course of the past decade, though, social media has come to resemble something more like regular media. It’s where we find promotional videos created by celebrities, pundits shouting responses to the news, aggregated clips from pop culture, a rising tide of A.I.-generated slop, and other content designed to be broadcast to the largest number of viewers possible.