Patiently, inexorably, the computer had been rearranging letters in all their possible combinations, exhausting each class before going on to the next. As the sheets had emerged from the electromatic typewriters, the monks had carefully cut them up and pasted them into enormous books. In another week, heaven be praised, they would have finished. Just what obscure calculations had convinced the monks that they needn’t bother to go on to words of ten, twenty, or a hundred letters.

George didn’t know. One of his recurring nightmares was that there would be some change of plan, and that the high lama (whom they’d naturally called Sam Jaffe, though he didn’t look a bit like him) would suddenly announce that the project would be extended to approximately A.D. 2060. They were quite capable of it.

George heard the heavy wooden door slam in the wind as Chuck came out on to the parapet beside him. As usual, Chuck was smoking one of the cigars that made him so popular with the monks—who, it seemed, were quite willing to embrace all the minor and most of the major pleasures of life. That was one thing hi then: favour: they might be crazy, but they weren’t bluenoses. Those frequent trips they took down to the village, for instance…

“Listen, George,” said Chuck urgently. I’ve learned something that means trouble.”

“What’s wrong? Isn’t the machine behaving?” That was the worst contingency George could imagine. It might delay his return, and nothing could be more horrible. The way he felt now, even the sight of a TV commercial would seem like manna from heaven. At least it would be some link with home.

“No—it’s nothing like that.” Chuck settled himself on the parapet, which was unusual because normally he was scared of the drop. “I’ve just found what all this is about.”

“What d’ya mean? I thought we knew.”

“Sure—we know what the monks are trying to do. But we didn’t know why. It’s the craziest thing—”