He looked searchingly at Dave. "Do you see it? The two time lines came together. Two opposites fused into one. Don't ask me to explain it; it was long ago, and all I know for sure is that it happened. The two worlds met and fused, and out of the two came this world, in what the books call the Dawnstruggle. When it was over, our world was as it has been for thousands of centuries. In fact, one result was that in theory, neither original world could have a real past, and the fusion was something that had been—no period of change. It's pretty complicated."

"It sounds worse than that," Dave grumbled. "But while that might explain the mystery of magic working here, it doesn't explain your sky."

Bork scratched his head. "No, not too well," he admitted. "I've always had some doubts about whether or not all the worlds have a shell around them. I don't know. But our world does, and the shell is cracking. The Satheri don't like it; they want to stop it. We want it to happen. For the two lines that met and fused into one have an analogue. Doesn't the story of that fusion suggest something to you, Dave Hanson? Don't you see it, the male principle of rule and the female principle of whim; they join, and the egg is fertile! Two universes join, and the result is a nucleus world surrounded by a shell, like an egg. We're a universe egg. And when an egg hatches, you don't try to put it back together!"

He didn't look like a fanatic, Dave told himself. Crazy or not, he took this business of the hatching egg seriously. But you could never be sure about anyone who joined a cult. "What is your egg going to hatch into?" he asked.

The big man shrugged. "Does an egg know it is going to become a hen—or maybe a fish? We can't possibly tell, of course."

Dave considered it. "Don't you even have a guess?"

Bork answered shortly, "No." He looked worried, Dave thought, and guessed that even the fanatics were not quite sure they wanted to be hatched. Bork shrugged again.

"An egg has got to hatch," he said. "That's all there is to it. We prophesied this, oh, two hundred years ago. The Satheri laughed. Now they've stopped laughing, but they want to stop it. What happens to a chick when it is stopped from hatching? Does it go on being a chick, or does it die? It dies, of course. And we don't want to die. No, Dave Hanson, we don't know what happens next—but we do know that we must go through with it. I have nothing against you personally—but I can't let you stop us. That's why we tried to kill you. If I could, I'd kill you now, with the snetha-knife so they couldn't revive you."

Dave said reasonably, "You can't expect me to like it, you know. The Satheri, at least, saved my life—" He stopped in confusion. Bork was staring at him in hilarious incredulousness that broke into roars of laughter.

"You mean ... Dave Hanson, do you believe everything they tell you? Don't you know that the Satheri arranged to kill you first? They needed a favorable death conjunction to bring you back to life; they got it—by arranging an accident!"