Between the elections of Tony Blair and David Cameron, the world changed. Built on a set of computer network protocols, a parade of technologies and services blinked into existence that now seem essential threads in the fabric of our society: mobile data networks, Wikipedia, Twitter, Google, YouTube, blogging, Facebook, Lolcats.

You don’t get that kind of change without a lot of comment. Ironically, given that it’s an environment composed entirely of data packets, the Internet has spawned a great many books. Computing has binary logic gates at its core, so it is apt that