In that respect, my encyclopædic blaze symbolised the benefits of creative destruction. Britannica stood for a time when access to information was limited, and largely determined by money. The magnificence of the collection was deeply connected to the fact that they were exclusive, expensively produced objects. We might well miss the smell of the leather binding, the crisp sound of flicking through their thin pages, the gravitas that the sheer 4lb weight of each volume suggested. But if what was on those pages mattered most, we must believe that these losses are more than outweighed by the freedom for anyone with an internet connection to access the same content and more at little or no cost. A world of valuable books behind the closed doors of a privileged minority cannot be preferable to one of invaluable information available through the open door of a web browser.

…There’s a half-expected (but still surprising) guest appearance from what I would be willing to bet is a young Christopher Hitchens. In a diverting rant about the increasing presence of voice effects in games, Amis recalls his first exposure to such gimmickry at a bar in Paris on New Year’s Day, 1980:

I was with a friend, a hard-drinking journalist, who had drunk roughly three times as much Calvados as I had drunk the night before. And I had drunk a lot of Calvados the night before. I called for coffee, croissants, juice; with a frown the barman also obeyed my friend’s croaked request for a glass of Calvados.

Then we heard, from nowhere, a deep, guttural, Dalek-like voice which seemed to say: “Heed! Gorgar! Heed! Gorgar … speaks!

“… Now what the hell was that?” asked my friend.

“I think it was one of the machines,” I said, rising in wonder.

“I’ve had it,” said my friend with finality. “I can’t cope with this,” he explained as he stumbled from the bar.

“Your book is shit and you should feel bad,” wrote one. “Three chapters of crawling didn’t inspire me to write about your book in my exam,” confessed another. “It was rather boring really.”

Other correspondents were even more blunt: “YOUR BOOK IS THE REASON MY ENTIRE YEAR WILL FAIL OUR ENGLISH EXAM!!,” screeched one. “LEARN TO WRITE ILLITERATE FOOL!”

James’s fondness for cheese is believed to be a matter of which no one in this earthly sphere is unaware. For a time, it was assumed that there were some remote peoples still untouched by his rennet-based droning, but in that recent aerial footage of the uncontacted Amazon society, the tribe was seen to have arranged a collection of bones and earthenware shards into the words: “PLEASE STOP ALEX JAMES GOING ON ABOUT BLOODY CHEESE.”

In “11/22/63,” we get glimpses of a nimbus of evil that surrounds the world. There are no single crimes. Each act of cruelty or violence is somehow associated – harmonized, King would suggest – with every other act. Inside the past, Amberson learns there are no accidents, no inadvertencies. Just an infernal machine. (Tick, tock.) He says: “Coincidences happen, but I’ve come to believe they are actually quite rare. Something is at work, O.K.? Somewhere in the universe (or behind it), a great machine is ticking and turning its fabulous gears.”

There is a darker what-if. What if history is too forceful to redirect? What if jiggering the engine produces no favorable outcome – merely a postponement of the inevitable? If he had lived, Kennedy might not have escalated the war in Vietnam, and might have kept America out of a bloody mire. But we don’t know.

Oswald just happened to be at the right place at the right time. He and his wife were effectively done, and she was living with Mrs. Paine out in Irving. He used to come on the weekends, but that week, he came on Thursday – the night before the assassination. And it seems pretty clear from his actions and from the things he said that he had decided to do this, but that he could be persuaded to change his mind. He and Marina went to bed that night and in bed, he asked her, “Is there a chance that we can get back together?” And she was very cold to him. She said, “No, I don’t think that’s ever going to happen, Lee.” And in the morning, he left his wedding ring and he left all the money in his pockets in a teacup in the kitchen for her. And that was it. There is this chain of ifs, but really, it’s as simple as that. He wanted to shoot somebody. He wanted to be somebody famous. It’s all there. The pieces all click together pretty nicely.

And with that he’s off again. Of Salman Rushdie, who once gave him a terrible review in the New York Times, he says: “That flaccid fuckhead. He was detestable. I called up the Ayatollah, nobody knows that.” Roald Dahl: “The cruelty in his books is off-putting. Scary guy. I know he’s very popular but what’s nice about this guy? He’s dead, that’s what’s nice about him.” Stephen King: “Bullshit.” Gwyneth Paltrow: “I can’t stand her.”

Over the three-day course in Wales, my scepticism drained away entirely and I became a Hare devotee. I think the other sceptics felt the same. He was very convincing. I was attaining a new power, like a secret weapon. I felt like a different person, a hardliner, not confused or out of my depth as I had been when I’d been hanging around with Tony in Broadmoor. Instead, I was contemptuous of those naive people who allowed themselves to be taken in by slick-tongued psychopaths.

My mind drifted to what I could do with my new powers. If I’m being honest, it didn’t cross my mind to become some kind of great crime fighter, philanthropically dedicated to making society a safer place. Instead, I made a mental list of all the people who over the years had crossed me and wondered which of them I might be able to expose as having psychopathic character traits. Top of the list was AA Gill, who had always been very rude about my television documentaries and had written a restaurant column in which he admitted to killing a baboon on safari.

“Item 8 Callous/lack of empathy,” I thought, and smiled to myself.’