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.

The twentieth century saw a professionalization of fiction writing, particularly in its second half and particularly in the Anglo-Saxon world - not so much mainland Europe, for example.

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.

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.

My own disposition is to trust the reader. Of course, there's a line between trusting the reader and expecting her to read your mind. That's where a friend or an editor comes in. A great editor will tell you straight when you've drifted into the latter territory.

The twentieth century saw a professionalization of fiction writing, particularly in its second half and particularly in the Anglo-Saxon world - not so much mainland Europe, for example. This professionalization is a tragedy. Hand in hand with this - and I have no idea what the causal relations are - there has been a rise in the idea of The Author, so that today one often has the impression that what's selling the book is not the book but the author.

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.