There was a period of a few months, however, when I had a dreadful physical pain. I had just started writing a particular section of the novel and was initially worried that it would affect my work. I was woken by awful nightmares; I saw several doctors, tests were performed, nothing came of them, and the medics were mystified.It was two days after I finished writing the section that the penny dropped. The pain had suddenly disappeared and so too had the nightmares. I'd got things muddled. The pain and the nightmares were both psychosomatic.

Our interaction with our friends, for instance, is in large part an interaction with representations in our own head of the people before us. That's why a friend can surprise or disappoint us.

The difference does not lie in the things that news does that novels do not do, but in the things that novels do that news cannot do. In other words, this basic technique of news - just one among many - is something a novel can use, but a novel can deploy a multitude of other techniques also. Novels are not bound by the rules of reportage. Far from it. They're predicated on delivering experience.

There have been studies concluding that most people mostly know people only within their own social class - although such a conclusion would hardly surprise anyone. I think there's evidence to suggest that it's even narrower - the great majority of friends of Ivy Leaguers, for instance, are Ivy Leaguers. This narrows the pool of people who can write fiction cutting across class boundaries that's informed by their own personal experience.

By delivering experience, novels can alter the stance we adopt toward news - not much, I'm sure, but they can make it a little more difficult for us to consign "other people" to our tidy boxes. Widening our imaginative life might - it's not hard to imagine - also develop our ability to contemplate counterfactuals and our capacity to speculate about how things might differ from how they're being represented.

Until I reached my late teens, there was not enough money for luxuries - a holiday, a car, or a computer. I learned how to program a computer, in fact, by reading a book. I used to write down programs in a notebook and a few years later when we were able to buy a computer, I typed in my programs to see if they worked. They did. I was lucky.

Writing is indeed essential to me. I have been writing for a long time but not for publication. I'm sure there are many, many people who do the same. The rewards of writing are in the process and not the product - not just for me but for others I have met.