Permutation City

Maria baulked. "That's . . . like claiming that a VR environment could alter the real-world laws of physics in order to guarantee its own internal consistency. Even with thousands of Copies in VR environments, that never happened back on Earth."

"No -- but which is most like the real world: Elysium, or the Autoverse?" Durham laughed, without bitterness. "We're all still patchwork Copies, most of us in private fantasy lands. Our bodies are ad hoc approximations. Our cities are indestructible wallpaper. The "laws of physics" of all the environments in Elysium contradict each other -- and themselves -- a billion times a day. Ultimately, yes, everything runs on the TVC processors, it's all consistent with the TVC rules -- but level after level is sealed off, made invisible to the next, made irrelevant.

"On Planet Lambert, everything that happens is intimately tied to one set of physical laws, applied uniformly, everywhere. And they've had three billion years of that. We may not know what the deepest laws are, anymore, but every event the Lambertians experience is part of a coherent whole. If there's any conflict between the two versions of reality, we can't rely on our own version taking precedence."

Maria couldn't argue for patchwork VR holding up against the deep logic of the Autoverse. She said, "Then surely the safest thing would be to ensure that there is no conflict. Stop observing the Autoverse. Give up all plans of making contact. Isolate the two explanations. Keep them from clashing."

Durham said flatly, "No. We're already in conflict. Why else can't we shut them down?"

"I don't know." Maria looked away. "If the worst comes to the worst . . . can't we start again? Construct a new Garden-of-Eden configuration? Launch ourselves again, without the Autoverse?"

"If we have to." He added, "If we think we can trust the TVC universe to do everything it's programmed to do -- without altering the launch process, fouling it up . . . or even passing on the modified laws which we think we're escaping."

Maria looked out at the City. Buildings were not collapsing, the illusion was not decaying. She said, "If we can't trust in that, what's left?"

Durham said grimly, "Nothing. If we don't know how this universe works anymore, we're powerless."

She pulled her hand free. "So what do you want to do? You think if you have access to more of the Autoverse than the data channels running out from the hub, you can make the TVC rules apply? One whole face of the pyramid shouting stop to the neighboring processors will carry more weight than the normal chain of command?"

"No. That might be worth trying. But I don't believe it will work."

"Then . . . what?"

Durham leaned forward urgently. "We have to win back the laws. We have to go into the Autoverse and convince the Lambertians to accept our explanation of their history -- before they have a clear alternative.

"We have to persuade them that we created them, before that's no longer the truth."

29

Thomas sat in the garden, watching the robots tend the flowerbeds. Their silver limbs glinted in the sunshine as they reached between the dazzling white blossoms. Every movement they made was precise, economical; there was no faltering, no resting. They did what they had to, and moved on.

When they were gone, he sat and waited. The grass was soft, the sky was bright, the air was calm. He wasn't fooled. There'd been moments like this before: moments approaching tranquility. They meant nothing, heralded nothing, changed nothing. There'd always be another vision of decay, another nightmare of mutilation. And another return to Hamburg.

He scratched the smooth skin of his abdomen; the last number he'd cut had healed long ago. Since then, he'd stabbed his body in a thousand places; slit his wrists and throat, punctured his lungs, sliced open the femoral artery. Or so he believed; no evidence of the injuries remained.

The stillness of the garden began to unnerve him. There was a blankness to the scene he couldn't penetrate, as if he was staring at an incomprehensible diagram, or an abstract painting he couldn't quite parse. As he gazed across the lawn, the colors and textures flooding in on him suddenly dissociated completely into meaningless patches of light. Nothing had moved, nothing had changed -- but his power to interpret the arrangement of shades and hues had vanished; the garden had ceased to exist.

Panicking, Thomas reached blindly for the scar on his forearm. When his fingers made contact, the effect was immediate: the world around him came together again. He sat, rigid for a moment, waiting to see what would happen next, but the stretch of dark green in the corner of his eye remained a shadow cast by a fountain, the blue expanse above remained the sky.