This, I believe, is what happened to many of America’s key institutions in the mid-to-late 2010s. They got stupider en masse because social media instilled in their members a chronic fear of getting darted. The shift was most pronounced in universities, scholarly associations, creative industries, and political organizations at every level (national, state, and local), and it was so pervasive that it established new behavioral norms backed by new policies seemingly overnight. The new omnipresence of enhanced-virality social media meant that a single word uttered by a professor, leader, or journalist, even if spoken with positive intent, could lead to a social-media firestorm, triggering an immediate dismissal or a drawn-out investigation by the institution. Participants in our key institutions began self-censoring to an unhealthy degree, holding back critiques of policies and ideas— even those presented in class by their students—that they believed to be ill-supported or wrong.

But when an institution punishes internal dissent, it shoots darts into its own brain.

…..

American politics is getting ever more ridiculous and dysfunctional not because Americans are getting less intelligent. The problem is structural. Thanks to enhanced-virality social media, dissent is punished within many of our institutions, which means that bad ideas get elevated into official policy.