Well, all this belongs to the future. And so do I. Even before the cosmic cleavage altered all history I was… — Henry Kuttner

The whole thing never happened and I can prove it — now. But Ira De Kalb made me wait a billion years to write the story.

So we start with a paradox. But the strangest thing of all is that there are no real paradoxes involved, not one. This is a record of logic. Not human logic, of course, not the logic of this time or this space.

This isn't my world, now. Not any more. Not the world I left. This is a world in which no nekronic flash leaped from a box that Ira De Kalb opened and dropped to his hearthstone to infect the world, De Kalb and me. All that did happen once, in another world that hasn't existed since the four of us, a doubled weapon wielded by the Face of Ea, wrought the cleaving apart of two universes.

Imponderable forces shifted when that cleavage took place. You and I know nothing about it, for it happened far beyond the perceptions of any sentient creature. But it happened. Oh yes, it happened.

He seemed to feel something like indulgent contempt for the rest of the world. It was all right, I suppose. Nobody had better reason. The man was a genius.