Habermas's new book, A New Structural Transformation of the Public Sphere,1 offers a timely and insightful analysis of the threats that online communication poses to the maintenance of an inclusive public sphere in democratic societies. Amid growing discontent with democracy, there are plenty of reasons to be worried about the increasing deterioration of the political public sphere. In addition to long-standing threats such as the excessive influence of money in political discourse, the potential for manipulation by powerful social groups, and the exclusion of marginalized voices from public discourse, technological innovations such as social media platforms and big data collection are generating new types of threats.
These threats are being generated more quickly than society's ability to cope with them. The business model of social media platforms is based on maximizing user engagement through data harvesting and algorithmic personalization. The preselection of content for users based on data about their past preferences facilitates the creation of filter bubbles and echo chambers with the consequence that those who rely mainly on social media almost never receive information, news, or opinions that they do not already agree with. These features of social media not only increase group isolation, fragmentation, and polarization but also facilitate the dissemination of misinformation, fake news, conspiracy theories, and the micro-targeted manipulation of voters.
Amid these threatening developments, we are seeing a decline in traditional media outlets that operate under journalistic norms of impartiality, accuracy, accountability, and so on. Consequently, it is unclear how citizens can stay sufficiently politically informed to engage in meaningful debate with their fellow citizens, even on the most fundamental political problems facing them. At this historical juncture, the danger that a shared sense of community among the citizenry disappears seems alarmingly real. Yet, democratic self-government is only possible if citizens can forge a collective political will by changing one another's hearts and minds in public debate. Without an inclusive public sphere, citizens cannot keep the democracies they have got.2
This concern is at the core of Habermas's analysis of the role of social media communication in bringing about a new structural transformation of the public sphere. Indeed, Habermas identifies the inclusive character of the public sphere as the feature that is most in danger of “disappearing” due to the centrifugal forces of social media communication which yield increased fragmentation, polarization, misinformation, and so on.3 I share Habermas's concern. I am convinced by his analysis of the distinctive threats that social media communication poses to the maintenance of an inclusive public sphere. I also agree with the two main mechanisms that he identifies as most promisi