This is a dramatic and historic democratization of speech. And like any democratizing force, it challenges existing power structures. Political and cultural elites are confronting a raucous online conversation that they can’t control, and many are understandably anxious about it.

I am going to make the argument that the predominant form of the social web — that amalgam of blogging, Twitter, Facebook, forums, Reddit, Instagram — is an impoverished model for learning and research and that our survival as a species depends on us getting past the sweet, salty fat of “the web as conversation” and on to something more timeless, i... See more