Little white lies shining like baby teeth in a shallow grave. — Charles Stross

But policing, crime prevention and detection, is a Red Queen’s race: You have to run as fast as you possibly can just to stand still. You can collar criminals until the cows come home, and there’ll still be a never-ending supply of greedy fuckwits and chancers. It’s like there’s a law of nature: Not only is the job never done, the job can never be done.

Privacy is a luxury; to buy it you need to be able to buy space and fit locks, to switch off the phone and live without fear of dependency on others. Privacy is a peculiarly twentieth-century concept, an artefact of the Western urban middle classes: Before then, only the super rich could afford it, and since the invention of e-mail and the mobile phone, it has largely slipped away.

“The programmers have a saying, you know? ‘If we understand how we do it, it isn’t artificial intelligence anymore.’”