Permutation City

Thomas said mildly, "If you're fishing for a job as a futurology consultant, I'm afraid I already employ several -- highly qualified -- people who do nothing but investigate these trends. Right now, everything they tell me gives me reason to be optimistic -- and even if they're wrong, Soliton is ready for a very wide range of contingencies."

"If your whole foundation is eviscerated, do you honestly believe it will be able to ensure that a snapshot of you is hidden away safely -- and then resurrected after a hundred years or more of social upheaval? A vault full of ROM chips at the bottom of a mine shaft could end up taking a one-way trip into geological time."

Thomas laughed. "And a meteor could hit the planet tomorrow, wiping out this computer, all of my backups, your organic body . . . anything and everything. Yes, there could be a revolution which pulls the plug on my world. It's unlikely, but it's not impossible. Or there could be a plague, or an ecological disaster, which kills billions of organic humans but leaves all the Copies untouched. There are no certainties for anyone."

"But Copies have so much more to lose."

Thomas was emphatic; this was part of his personal litany. "I've never mistaken what I have -- a very good chance of a prolonged existence -- for a guarantee of immortality."

Durham said flatly, "Quite right. You have no such thing. Which is why I'm here offering it to you."

Thomas regarded him uneasily. Although he'd had all the ravages of surgery edited out of his final scan file, he'd kept a scar on his right forearm, a small memento of a youthful misadventure. He stroked it, not quite absentmindedly; conscious of the habit, conscious of the memories that the scar encoded -- but practiced at refusing to allow those memories to hold his gaze.

Finally, he said, "Offering it how? What can you possibly do -- for two million ecus -- that Soliton can't do a thousand times better?"

"I can run a second version of you, entirely out of harm's way. I can give you a kind of insurance -- against an anti-Copy backlash . . . or a meteor strike . . . or whatever else might go wrong."

Thomas was momentarily speechless. The subject wasn't entirely taboo, but he couldn't recall anyone raising it quite so bluntly before. He recovered swiftly. "I have no wish to run a second version, thank you. And . . . what do you mean, "out of harm's way"? Where's your invulnerable computer going to be? In orbit? Up where it would only take a pebble-sized meteor to destroy it, instead of a boulder?"

"No, not in orbit. And if you don't want a second version, that's fine. You could simply move."

"Move where? Underground? To the bottom of the ocean? You don't even know where this office is being implemented, do you? What makes you think you can offer a superior site -- for such a ridiculous price -- when you don't have the faintest idea how secure I am already?" Thomas was growing disappointed, and uncharacteristically irritable. "Stop making these inflated claims, and get to the point. What are you selling?"

Durham shook his head apologetically. "I can't tell you that. Not yet. If I tried to explain it, out of the blue, it would make no sense. You have to do something first. Something very simple."

"Yes? And what's that?"

"You have to conduct a small experiment."

Thomas scowled. "What kind of experiment? Why?"

And Durham -- the software puppet, the lifeless shell animated by a being from another plane -- looked him in the eye and said, "You have to let me show you exactly what you are."

3

(Rip, tie, cut toy man)

JUNE 2045

Paul -- or the flesh-and-blood man whose memories he'd inherited -- had traced the history of Copies back to the turn of the century, when researchers had begun to fine-tune the generic computer models used for surgical training and pharmacology, transforming them into customized versions able to predict the needs and problems of individual patients. Drug therapies were tried out in advance on models which incorporated specific genetic and biochemical traits, allowing doses to be optimized and any idiosyncratic side-effects anticipated and avoided. Elaborate operations were rehearsed and perfected in Virtual Reality, on software bodies with anatomical details -- down to the finest capillaries -- based on the flesh-and-blood patient's tomographic scans.

These early models included a crude approximation of the brain, perfectly adequate for heart surgery or immunotherapy -- and even useful to a degree when dealing with gross cerebral injuries and tumours -- but worthless for exploring more subtle neurological problems.