At home, where he writes, he no longer has internet access. A four-month stint with wi-fi proved “deadly” for his productivity and having no access at all ensures that he is not tempted to “look at Kajagoogoo videos and old ads for Wrigley’s Spearmint Gum” on YouTube. “Writing is a deep-sea dive. You need hours just to get into it: down, down, down. If you’re called back to the surface every couple of minutes by an email, you can’t ever get back down. I have a great friend who became a Twitterer and he says he hasn’t written anything for a year.