Novels need readers of a certain kind, people who are patient and enjoy immersing themselves in another perspective for uninterrupted stretches of time. Reading habits might well be changing. People who pay for novels might overlap significantly with those who engage in Twitter and Facebook.

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.

A poison can hardly be called safe if for some reason specific to me it's ineffective against, say, my body. But the power of story on the human mind is such that anecdote is often more persuasive than numbers. That's why news stories often concretize the impact of a change in government policy by following the story of one person.

I had a tough childhood, yes. I was born in rural Bangladesh to parents who had had no education beyond high school. We moved to the UK where I grew up in poverty, in some of the worst conditions in a developed economy, before moving to the projects - heaven - and I went to unremarkable schools before going to university. My father was a bus conductor first and then a waiter, and my mother a seamstress.

Of course, an English aristocrat might have some contact with the staff downstairs and could adequately say a thing or two about inter-class dramas unfolding in the household. But something less parochial might be harder to come by. This is relevant because stories about the divisiveness of class are by definition stories that straddle class boundaries. A story about a miner in a mining town is not obviously one that speaks to the divisiveness of class. In other words, class doesn't just divide us in the world but it also divides us in the stories we're presented.

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 are a variety of ways in which a wedge is driven between the reality of the world outside, the motion of atoms, and our conception of what is there. Some of it has to do with what we're told, some of it to do with sensibilities that might be described as cultural, some of it to do with habit, some to do with heuristics we, as Homo sapiens, invoke because we cannot do otherwise - to name just a few of the impediments.