"The [structural] mechanism producing these problematic outcomes is really robust and hard to resolve." Credit: Aurich Lawson | Getty Images Credit: Aurich Lawson | Getty Images It's no secret that much of social media has become profoundly dysfunctional. Rather than bringing us together into one utopian public square and fostering a healthy exchange of ideas, these platforms too often create filter bubbles or echo chambers. A small number of high-profile users garner the lion's share of attenti...