Ethan Zuckerman, director of the Center for Civic Media writes: An idea for those seeking a technical solution to our polarization and isolation: public social media. Private platforms like Facebook are under no obligation to provide us a diverse worldview. If it is more profitable to bring us baby pictures from our friends than political stories, or to isolate us in a bubble of ideologically comfortable information, they will. A public social media platform would have the civic mission of providing us a diverse and global view of the world. Instead of focusing resources on reporting, it would focus on aggregating and curating, pushing unfamiliar perspectives into our feeds and nudging us to diversity away from the ideologically comfortable material we all gravitate towards.