by Larry Niven
There were more mitochondria per cell, too. There seemed little purpose in this until Peace made the connection with a genetic disease she'd read about, now absent from the species, that caused mitochondria to accumulate calcium phosphate. In a Protector, it was a storehouse of material for regenerating bone; in breeders, it sapped strength in all tissues on a cellular level by limiting the size of the ATP reserve. It must have been universal at one time—Pak breeders didn't need stamina, clear heads, or motivation: they had Protectors. Peace recalled that salicylic acid, and its salts and esters, caused mitochondria to store inorganic phosphates, and she determined to stockpile the stuff.
She had used up most of a day getting acquainted with her new condition. Time to get to work. It would be tedious; the annihilation of technological artifacts was so thorough it must have taken some earlier expedition's protectors weeks, and Truesdale and the Home Protectors had stripped out all ore deposits for their arsenals before the asteroid bombardment, sensibly enough. (The mining trees were a splendid bit of misdirection: the Brennan virus had an affinity for the bark, which was crumbly.)
She went through the hidden parts of the computer's memory and found references to inventions the UN ARM had suppressed. Some sounded useful. There were no technical details, but a general outline of principles was usually given, and that was enough.
The third day she gave in to her impatience and built an automaton that could perform simple routine tasks, like cleaning rooms or repairing scanners. For the latter task she had to include a device that distorted the force binding the instrument shells, making them pliable enough to reach through; it had been obvious that the puppeteers must have some means of softening GP hulls, as they would never have sold invulnerable warship hulls to aliens. This done, she had the idea of building automata to fabricate parts usable in a variety of items, and judged it worth the time. (Technology doesn't save labor: it invests it.) Pure elements could be had via the expedient of a conveyor belt, a disintegrator, and a tapered wind tunnel. She dedicated five days to these tasks, then one more for a device that assembled parts to order, and was able to begin work on parts for the exotic stuff. She arranged a foil shell in stasis for workshop housing—some of the mechanisms would absorb stray neutrinos otherwise—and began building various specialized components for weapons of short, middle, and long ranges. Middle range being the horizon.
When the kzinti showed up, she was pleasantly surprised (and just a bit embarrassed for them) to find that she could easily break into their ship's command codes, which raised the possibility of interrogating prisoners. She shut off the fuel feed to their fusion source, then found mechanical cutouts that prevented total shutdown of key systems, so she broke out something she'd built as a battery charger. It was faster than laying cables everywhere: it drew power out of all nearby sources, or a source it was aimed at, all without the need for broadcasting. It was just the thing to make a ship fall down.
Most of the survivors were an armored infantry group, and the ones who saw her didn't fight the way she'd expected kzinti to fight; they seemed desperate, rather than fanatical. It dawned on her that a Pak Protector must have landed on Kzin two and a half million years back, and made a really lasting impression. They would have been intelligent by then, but not civilized. Oral tradition would have distorted with every generation, but drawings would be kept up. Some of these troops blew themselves up when it was clear she'd be able to capture them; it was like they expected her to drag them, screaming, back to Hell.
The last survivor was pinned in the wreck; he'd been pretty well-protected, but he was still nearly torn in half. She found the medical supplies and dosed him with things whose labels showed a kzin bleeding, a kzin thrashing around, and a kzin in pain. (Arrows pointing in, instead of stars flying out. Fifty thousand generations of mortal combat for mates had evidently selected for kzinti so healthy that pain was regarded as an unnatural, external phenomenon.) When he became coherent, he asked if her name was [outraged wrathful snarl]. She told him her name, and he did a very strange thing: he pleaded with her. "We only wanted slaves this time," he said.
She immediately realized, with some amusement, what he understood the word peace to mean, and saw that he too regarded her as some sort of divine avenger; come to slay them all for eating humans, most likely. The word slaves, however, called up old information she hadn't thought of since college; and everything suddenly fell into place.
How could a species that exterminates all mutated offspring have evolved?
* * *
The Slavers had ruled the Galaxy a couple of billion years back, according to Larry Greenberg, a human telepath who'd spent several weeks more or less possessed by one. (It had been released from stasis, due to a level of carelessness that Peace would have found appalling even when she was a heavily-medicated breeder. Paranoia was more common then, and had such a bad reputation that caution was treated as some kind of vice.) They used telepathic control to command other species (the Grogs of Down were their incredibly remote and wildly mutated descendants) and enslave them—hence the term. Their name for themselves was thrintun. (It was pronounced without the tongue ever touching the teeth—a thrint's teeth were metallic, and razorlike—and for a human it was a fine way to try to strangle yourself without using your hands.) Their principal slaves had been the tnuctipun, who were miracle workers at genetic design. The tnuctipun had produced the bandersnatch, still found on Jinx—they didn't mutate. The bandersnatch was intelligent, and immune to thrintun Power, and created as a food animal—the big brain was justified by making it very tasty. Bandersnatchi were made to be spies on the thrintun. The tnuctipun had spent centuries developing ways to screw up the thrintun while ostensibly being helpful, and when war finally became open the only counterweapon the thrintun had that worked was amplified Power: they had commanded everything in the Galaxy to commit suicide. Everything that wasn't immune, in stasis, or too stupid to understand, obeyed.
Greenberg had said there were seventeen other intelligent races—eighteen if you stretched the definition a little. Implicitly, the eighteenth race must have sometimes gotten even clear telepathic orders wrong. The tnuctipun would have been assigned to make them smarter.
They had. It must have been one of their first successes. They came up with a virus that turned vegetable protein into the most amazing prions, and altered the species to start finding it irresistible—but only after reproducing. The desexing wasn't necessary, and from an evolutionary viewpoint was actually undesirable; selection would work better if reproduction occurred after the development of intelligence. The killing of mutated descendants was another deliberate effort to prevent evolution, and it had worked for two billion years. The loss of appetite when there were no descendants was just a safety feature to keep their numbers down, and the virus' thallium requirement was a way of limiting their mobility. The breeders' genes had evidently also been altered so that their brains were hardwired to sympathize with rebels and underdogs. Even today, humans hearing about the Slaver era tended to side with the tnuctipun—who by any reasonable standard were as coldly evil a race as had ever existed. (Kzinti ate intelligent lifeforms because hunting them was such a good challenge, and this was as horrifying a practice as you could find nowadays; but even they would recoil at the thought of creating an intelligent race for use as food.)
The parent species must have averaged a good deal brighter than Homo habilis. The Protectors that worked for the tnuctipun had undoubtedly produced many of the wonders that the tnuctipun were credited with—possibly all of the nongenetic ones, such as the Slaver hyperspace jump, disintegrators, stasis fields, and gravity control.
And the Slavers would have considered them perfectly harmless, because the Power would have seemed to work just fine on them. The compartmentalization of the Protector brain, however, would have meant that a Slaver could complacently hold a full lobe under complete control, unaware that that lobe was being left out of the control loop and the Protector was coming to
kill him. Which would have been their job, during the war. A Protector was an ideal field commando—eat anything, hard to see, hard to hurt, powerful senses, able to improvise anything needed from what was on hand.
When the Slavers gave the suicide command, the Protectors hadn't been affected; but the breeders had. The only survivors of that would have been mental subnormals, mutants that hadn't been killed because their Protectors had gone off to war. (The mutation rate in the Core would have been incredible.) They would have been the ones too stupid to understand the order. The rest of the breeders would have died, and the Protectors would have stopped eating. Later, the mutants became Protectors themselves, and the ones able to produce viable offspring had kept on eating, developed a language, and called themselves Pak. When the breeder population rose high enough, they had fought for living space.
For two billion years.
* * *
Protectors do not normally examine their motives.
But there had never been a paranoid Protector before.
Peace Corben, ready to question and then kill the last survivor, realized that the tnuctipun had created her condition for much the same reason that her mother had created her: to be used. Her face was hard as horn; her holocaustic wrath never showed.
She was not a tool.
She told the kzin some reassuring lies about his condition, then began doing everything she could to save him. That turned out to be a great deal.
* * *
Manexpert woke in a big soft swaddle inside a box, which turned out to be an autodoc. It opened when he moved. The lining smelled like some kind of plant fiber, woven, cleaned, and bundled up to serve as padding. Though the experience was unfamiliar, it was comfortable, and felt very natural somehow.
He looked around warily, and saw he was under shelter but not in the... entity's... ship. He must have been kept in stasis for years before the autodoc was working; a good-sized city had grown up. There were buildings of assorted sizes, all more or less hemispherical, all made of foil in stasis. Broad concrete walkways around and between them had rain canopies overhead. They were shaped to channel the rain into troughs, which was apparent because there was a fine spray falling now.
He realized he was panting, and that it wasn't any kind of threat response; the air was—not thick, no, but sort of used. Something must be producing a lot of carbon dioxide: each breath he took felt like he'd been holding it for some time.
The shelter he was under was the open one. He couldn't see a ship, or tell what any buildings were for. There were horizontal ridges on the buildings, far enough apart to serve as steps—for a kzin; they'd been put there for him, so he could look around.
He wasn't about to try to climb an inflexible surface in the rain. Instead he followed the flow of water alongside the walkways. Men liked water, to the point where, even as careful as they were, some of them still drowned now and then. This thing seemed to like men; it might like water.
Manexpert had no idea what he would do when he found the creature—or what, in fact, he could do to something that bore an appalling resemblance, in both form and capability, to the God's Appointed Enforcer. The only alternative, though, seemed to be climbing back into the autodoc.
He paused by one of the domes that had a flat patch, to look at his right eye.
The socket was at the intersection of three really impressive scars, which extended well back on his head.
The eye itself was artificial.
The iris was of fixed diameter, so it must adjust to light electronically. He tried bringing up his inner lid, and the character of the light altered in a way that indicated polarization. It tracked like his other eye; but after he'd stared at the reflection for a while, the image he saw with it began to magnify.
Astonished, Manexpert used the eye to study his fingerprints in detail. After looking at the patterns of intersecting circles for a few minutes, he realized to his further astonishment that much of the hand was new. He looked over as much of his body as he readily could, and saw that a lot of his scars were gone. He stopped wasting time and went to look for his captor.
This turned out to be easier than it had seemed. Most of the domes had open apertures, with no doors, and regardless of activity they were unlit inside. A few domes did have doors, and those were very solid ones. Manexpert didn't see a locking mechanism, but they evidently slid upward, and sheer weight would have held any of them shut against as many kzinti as could have gotten a grip. One dome did have light inside, and Manexpert found the creature there.
Gnyr-Captain and Power Officer were also there, watching control panels. They didn't look toward him as he entered. Both were considerably scarred, and short of fat. Manexpert took a step toward Power Officer, away from the doorway, and Peace called out to him, "They're dead."
Manexpert stared at Peace for a moment. He thought he'd been good at covering his thoughts, but Peace's face had no more expression than a tree trunk—which in fact it resembled, in both flexibility and texture. Then he went to each scarred kzin, to look them over. There were visible artificial parts to both of them. Each breathed in an absolutely regular rhythm. Their blinking was equally regular. Both had had extensive cranial surgery. Neither took any notice of him. He went to the creature and said, "What did you do?"
Peace wore a knee-length vest, well-strapped-on and more or less made out of pockets. It was remote-manipulating something behind a wall of what looked like General Products hull material—it was too clear for glass—and never looked away from its work as it said, "They were the most nearly intact corpses. Your ship's autodoc wouldn't regrow complex tissues, so I had to do some experiments before I could fix you up. Afterwards I had these empty kzinti, so I put some circuitry in their skulls to make up for the brain tissue they lost. There's a third, on rest shift, eating and grooming and sleeping. He's got dark patches along his back."
Technology Officer. "Why did you save me?"
"It was an act of defiance. I was created to protect human beings and destroy everything else—except my creators—and I just refuse to be used any longer. I tried to match the eye's signal pattern to the one the other eye was using; is it useful?"
"It's better than the other."
"It'll repair itself if no more than twenty sixty-fourths is lost or wrecked. Uses something I call programmable matter. It can operate using your metabolism for power, but it'll work better if you stay near an electrical source. I'm sending you back to Kzin."
Manexpert was having trouble keeping up. "I can't fly our ship alone," he said, to gain time for thought.
This failed. "I'm making a new ship. Took yours apart. It wasn't very good. You'll be using a ram to fuel the gravity planer. No hyperdrive."
"Why not?"
"I want you to live through the war. It'll be over by the time you reach Kzin. Just a few weeks from your viewpoint, of course. There we go." Peace let go the manipulator and switched it off, and a violet glow developed behind the barrier.
Manexpert stared in puzzlement. The equipment in there looked like an awful lot of effort to make a big mercury lamp. "What are you doing?" he said.
"Turning mercury-204 into thallium-204. The plague that ruined this place has an affinity for thallium, and will absorb twenty atoms of it into its viral shell. This will render it incapable of infecting anything but plants. It could still be remade into something lethal, but the thallium isotope is unstable and gradually turns back into mercury, which poisons the virus it's attached to. Some is turning back already, hence the glow. I have to start up your foodmaker now," Peace said, and ran out. Fast.
Manexpert was taken by surprise, and didn't follow for a moment, by which time Peace was out of sight. He went back in and looked at the kzinti again, and said softly in Hero, "Gnyr-Captain, what do I do?"
And then his fur stood straight out, as Gnyr-Captain's relict slowly turned to face him. After a few seconds Gnyr-Captain's face took on an expression, as of someone trying to recall the right word, and twice he open
ed his mouth and closed it again. He opened it a third time, made eye contact, pointed at Manexpert, and said, "Name."
"I'm Manexpert," he whispered.
Gnyr-Captain flicked his ears wide and relaxed them, a dismissive gesture, and made two poking motions and said, "Name."
"I don't have... you mean, you want me to have a Name?"
Gnyr-Captain let out a little sigh, relaxed, and turned back to the instruments he was monitoring. He made no further response to Manexpert, not even when touched. It was apparently the last thing his brain had been able to manage.
Manexpert went outside and wandered in whatever direction his feet took him, until it got dark; then he lay down wherever it was he happened to be.
* * *
Peace found him when she had a few free minutes, and went to fetch him a haunch of what the Cockroach's computer claimed was gazelle—at least, that was what the genes were supposed to be. (Jan Corben had absconded with a very large database.) He woke when she returned with it, as she was coming from upwind to be polite. He came up to a combat stance at once, fur bristling, eyes and ears wide in the darkness. He looked adorable. "Here," she said, and waved the leg to be smelled, then tossed it. He snagged it out of the air, and grunted at the unexpected weight. "There are no animals worth hunting here," she added. "Plague victims ate them all. I made you a knife." She handed that over. "Don't touch the edge, those fingers are brand new."
"W'tsai," said the kzin, inspecting the blade appreciatively by starlight. He carved off chunks and gulped without much chewing; there was a respectable chemical plant inside a kzinti abdomen, as Peace had cause to know, but it still looked funny. He cracked the bone reflexively, licked his fingers in embarrassment, and then noticed that there was indeed marrow. The ripple in the littlest claw on the hand was just the right shape to scoop in the very last scraps of marrow; that Pak Protector must have just about wiped out Kzin's supply of prey for that trait to have become standard. Killing off a major prey species with a tailored disease that the kzinti could contract would explain their inability to tolerate the taste of carrion, too—it would kill off the kzinti that ate food that they'd found, rather than killed themselves. When he had the bone fragments clean, Peace handed over a parcel she'd made up. It included grooming supplies, a knife (w'tsai) sheath, and a toolkit of useful articles, such as string and bandages and an oxygen mask and so forth. The kit had a light, and the kzin looked over the contents with growing perplexity. "What's this for?" he said, holding up the whistle.