What all this means in the long term is anyone’s guess. How much information can a brain usefully process? What end is served by the random tweets of countless individuals? The impulse to stay incessantly in touch can be viewed either as gregarious or as a sign of consuming anxiety. Twittering may be the opiate of the obsessively-compulsively disordered.

Who needs the couch, after all, when no thought is ever repressed?