Williams’s Careless People is a compulsively readable account of the effects of social media on democracy. Facebook’s former director of global public policy, Wynn-Williams left the company in 2017.

Change is in the air – or at least it is at Rutgers University. This is where Richard Poirier established the much-admired journal Raritan in 1981; it has become, in the view of Poirier’s successor, ...