Professor Hilbert smiled happily.

“There, glad that’s sorted out. Still, all things considered, it would be nice if we could prevent the end of the world from happening. With that in mind, onward we go.”

He began to lead them back to the car. Brian didn’t move. He just stood where he was, looking confused.

“But I only made the tea,” he said.

Professor Stefan steered him toward the car.

“Never mind,” he said. “Try looking on the bright side.”

“Is there one?”

“Not really.”

“Oh.”

“But if you come up with one, do let us know, won’t you?”

And high above their heads the stars were swallowed, one by one.

47. Boadicea was the queen of the Iceni tribe in Britain who led a rebellion against the Roman Empire in A.D. 60 or 61. Three settlements were destroyed during her war, including the young city of Londinium, or London. She was finally defeated in a battle in the West Midlands, but died without being captured. The Roman historian Dio said of her that she was “possessed of greater intelligence than often belongs to women.” Mind you, he said that after she was safely dead and gone, otherwise she’d have cut his head off and stuck it on a spike for saying stupid things about women.

48. Look, this is going to get very confusing. Unless someone decides otherwise, let’s call Dorothy “Reginald,” but stick with the use of the feminine pronoun. That way, she’ll be Reginald, and we can still refer to her as “her,” if you see what I mean.

It’s very troubling when characters take a funny unplanned turn in a book. They really should do what their creators tell them to do, but that brings us to the whole thorny subject of the problem of free will. If I knew what was going to happen at the end of this book—which, at this point, I don’t—then characters like Reginald/Dorothy would have to do whatever I told them to do, because that would be what was needed to make the plot work.

But right now I’m not sure what’s going to happen, and I’m discovering the plot of the book as I write it. This makes me a bit like a god, in that I created these characters, but not the type of god who knows everything in advance. The thing is, if I was that kind of god, and characters like Reginald/Dorothy were, in fact, real, would the fact that I knew what was going to happen to them mean that they had no free will of their own?

Some philosophers have argued that, if there is a god, and he knows everything that will happen in the future, then free will doesn’t really exist. I’m not sure that’s the case because, if it is, then we are all like characters in a book being written by a writer who knows the ending. Maybe it’s truer to say that, if there is a god, then he just happens to know how our story ends, and the choices we make are the ones that will lead to that particular ending.