Deep Sky

by Patrick Lee

  He waited to feel something, as the tunnel walls continued slipping by. Something like a barrier, or a threshold. Something—anything—that could be called a filter.

  But there was nothing.

  Just the smooth interior of the channel streaming past.

  Much closer now. Maybe a hundred yards from the tunnel’s end. Then fifty. Then ten.

  He could see details of the space beyond. A brightly lit room of some kind. Metal flooring. An opposite wall, easily a hundred feet beyond the opening. The chamber outside the tunnel must be huge.

  He put his hands out again and caught the channel’s sides repeatedly, shedding the momentum he’d built up earlier. He came to a complete stop with his head right at the tunnel’s threshold. He hovered, staring at the room that lay beyond.

  It was massive, and exotically shaped. The floor was a sweeping downward curve, like the inner surface of a barrel laid on its side. The walls to the left and right rose and angled inward, as if toward the barrel’s center somewhere high above the ceiling—though the ceiling itself had to be forty feet up. The floor just in front of the tunnel was metal, as Travis had seen earlier, but everywhere else it was glass or some equivalent—it was simply an enormous, curved window, and after the first passing glance at the room itself, Travis found his gaze drawn down and outward to the view.

  A planet. Right there. Suspended in deep black space and filling two thirds of the window. It was an amber-and-white version of Jupiter. Distinct bands of color met along ragged, swirled boundaries, and bent around cyclonic formations that were probably bigger than the Earth. Only a crescent edge of the giant world was lit up, catching the glow of a red-orange star that hung beyond it and far to the side. The star was visually the size of a quarter held at arm’s length.

  A second star, the same color, hovered much further away—it shone as no more than a superbright point in the darkness. Travis knew these were the two suns that formed 61 Cygni, seen as a single dim speck from the desert in eastern Wyoming.

  He stared for probably twenty seconds, his thoughts nearly blank. He noticed that the entire view outside was sliding steadily in one direction, and knew what that meant. Then he bent his legs and drew them forward and got his feet ahead of him in a seated position, and slid out of the tunnel.

  Gravity exerted itself at once. A good stand-in for gravity, anyway—the centrifugal force of the rotating ship. He put his feet down on the metal and felt his weight transfer onto them—exactly as it would have on Earth.

  “Jesus, it worked,” a man said.

  Travis turned to see a doorway that’d been out of view from inside the tunnel. Standing in it was Richard Garner, looking about as old as a college kid.

  Chapter Forty-Seven

  Travis stared at him, and then past him, suddenly wondering who else might step into the frame.

  Garner seemed to understand. “It’s probably best if you don’t meet yourself,” he said. “It’s not going to split the universe or anything, but I think it would be very distracting.”

  He had an accent—one Travis was sure he’d never heard before. Nor had anybody else in 2016, he knew.

  Garner stepped from the doorway and advanced. He smiled vaguely and shook his head. “I haven’t seen someone look this old in over a thousand years.”

  They stood at the center of the gigantic floor pane and spoke at length. Travis told Garner, in broad strokes, the story of the Breach as it’d played out on Earth. All that had resulted from that day in March of 1978. All that this version of Garner couldn’t know about—the aftermath of the plan he and the others had conceived and launched from this ship. The man looked disturbed, even remorseful, by the time Travis reached the end. He stared away into the starfield below—the planet and twin suns were no longer in view—and exhaled slowly.

  “We knew it would go bad in a lot of ways,” Garner said softly. “We debated whether to do it at all. But in the end the decision was unanimous. We had the chance to set things right. How could we pass it up?”

  He stood staring into the depths a moment longer, and then he drew a folded black card from his pocket and handed it to Travis. “Don’t open that until you’re ready. Inside is a long string of random letters, which your counterpart here has already thought. Once you return to your end of the tunnel, the Breach will revert to the form you’ve seen all these years. The plasma channel with entities coming through. It’ll stay that way until you unlock the tunnel once and for all.”

  “And to do that, I just think what’s on this card,” Travis said, more verifying than asking.

  Garner nodded. “It’ll work best if you read it aloud—that should keep your stream of thought on track. Other than that, there’s nothing to it. You can do it from anywhere on Earth, anytime after you go back. You read those letters, and the tunnel opens for us to come through. Easy as that.”

  Travis looked at the card. He thought of the disparity between its size and its power. Like a nuclear launch key. He slipped it into his pocket, then looked back up at Garner.

  Garner was gazing down through the window again. Watching the edge where stars were continually sliding into view. Travis realized he was waiting for something.

  At last the man pointed. “There.”

  Travis followed his downstretched arm and fingertip and saw a medium-bright yellow star that’d just crept into the frame. At a glance there was nothing special about it. It was all but lost amid the scatter of other stars.

  “Is that what I think it is?” Travis said.

  Garner nodded and spoke just above a breath. “There’s not a day I don’t come to this room and look at it. I stare at that little speck, and I wonder if there’s anything left of the Ferris wheel on Navy Pier in Chicago, or the Ko¯toku-in temple in Tokyo, or Nelson’s Column in Trafalgar Square. And I’ll never know.”

  “Can you actually change things?” Travis said. “If all of you come through to 2016, do you really believe you can rewrite history? And if you can, how do you know you’ll make it better? Couldn’t the same kind of war still happen someday, for other reasons?”

  It took a long time for Garner to answer. His eyes and his head slowly turned, tracking the distant pinpoint of light in the endless black. He was still watching it when he began to speak.

  “I can tell you about dozens of close calls the world has scraped past, these last twelve hundred years. Any one of those could’ve ended it. Finally one did. It was a matter of time.” Far below the curved glass, the giant gas planet crept back into view. First came one horn of the lit crescent, and then the broad curve. The mostly dark mass of the thing blotted out the stars beyond it like an ink spill. “There are fundamental problems that never seem to go away,” Garner said, “no matter how advanced the world becomes. No matter what you invent. No matter what you cure. You never get rid of things like denial, in-group and out-group thinking, cognitive dissonance. The things that underlie every conflict and every war. There are always people who want to get rid of those things, and those people get smarter and more capable over the centuries—but so does everyone else: the people who don’t want those things to change. So the pattern holds.” Garner looked up at Travis. “Our arrival in your time would stand some chance of breaking the cycle. We have the interests of the whole world at heart—we know what it’s like to lose it—and we also have the knowledge and means to really change things for the better. We’re more than just well informed. We’re smarter, by a wide margin, than anyone on Earth in 2016. Our brains are physically different from yours, given what we’ve done to them. Any one of us could complete an IQ test from your side of the Breach perfectly, about as quickly as we could move the pencil.”

  “But is that enough to change things forever? A few hundred of you, among a few billion?”

  Travis watched Garner and saw something in his eyes, flickering beneath the conviction with which he’d just spoken. A vestige of his earlier remorse, maybe.

  “No,” Garner said. “It takes more than that.�
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  Travis found himself speaking the word even as he thought it: “The filter.”

  Garner nodded just perceptibly. “How much do you know about it?”

  “Almost nothing,” Travis said.

  Seconds passed. Garner looked away. “A few minutes ago you told me about a computer called the Blackbird. Alien technology that you repurposed in some other timeline. A machine that can make hyper-accurate predictions, even about random events that haven’t happened yet.”

  Travis waited for him to go on.

  “We found computers just like that,” Garner said, “governing the hubs of this tunnel network.” He indicated the massive planet, already slipping back out of view. “You can’t see it from here, but there’s an object the size of Long Island orbiting just above the cloud tops down there. An artificial satellite. We managed to board it soon after arriving in this system. The best we could tell, it’s a way station of some kind, connecting hundreds of these tunnels to one another. The place is filled with old electronics, some of it running down, most of it still working. There’s automated maintenance overseeing everything critical, and based on certain timers we were able to decipher, we figure the thing’s been abandoned for just over three billion years.”

  Travis tried to get a sense of time on that scale, but gave it up after a few seconds.

  “Huge areas of the satellite are just stores of backup supplies,” Garner said. “Including computers. We took one, brought it aboard this ship, and spent about fifty years learning everything we could about it. Learning that it does its computation by interacting with surrounding material. Large amounts of surrounding material.”

  “A whole planet’s worth,” Travis said. “The Blackbird told me that at the end.”

  Garner nodded. “Once we understood that part, we realized there was a certain function we could use this computer for, if we ever made it back to Earth through one of these tunnels—back to Earth during your time. This function was very difficult to set up; it’s nothing you could’ve done with the Blackbird. The programming alone took us two decades. Then we ran thousands of simulations of how it would play out in real life once we triggered it. How it would work on Earth.”

  “How what would work? What function?”

  “We called it the filter. I don’t remember who came up with that name, but it stuck. I guess it made the idea sound clean.”

  “What does it do?”

  Garner remained silent for a while. He didn’t look at Travis. Beneath him, the planet slipped away again, leaving only the tumble of stars.

  “There’s a question philosophers used to ask,” Garner said. “Maybe you’ve heard some version of it. Suppose you suddenly found yourself on a street corner in Europe, in the year 1895, and encountered a six-year-old boy named Adolf Hitler. Could you kill him, right then and there?”

  “You’re asking?” Travis said.

  “Sure.”

  Travis thought about it. “I really don’t know. I’d think I should, but that’s not to say I could.”

  Garner nodded. “That’s a common answer. Let’s say you did kill him. Do you believe World War Two would be prevented as a result?”

  Travis shrugged. “I’m sure there’d still be a fight about something around that time.”

  Garner nodded again. “Same fight, for all the same reasons: broad political and religious ideologies grown out of centuries of ingrained hate; control of primary resources like territory, access to fossil fuel reserves, seaports. Somebody would’ve ended up banging the podiums over it. Different leaders might’ve been far less cruel, might’ve conducted the war in entirely different ways, but you could probably swap out the leadership of every country in the world at that time, and the middle of the twentieth century would’ve still been a nightmare. In which case you might ask yourself if it’d just be a mug’s game, trying to change things. Aboard this ship we asked ourselves that question, and not as some academic brain teaser. The answer meant a great deal to us.”

  Suddenly Travis understood. Or thought he did.

  “You and the others planned to bring that computer with you,” he said, “back to Earth in 2016. You could use it to identify people who’d eventually be responsible for wars, all kinds of atrocities, long before they took power. Then you could just . . . kill them?”

  “We could. And after that we could use the computer again to find out who was now on course to fill their shoes. And if we killed those people, we could look for their historical replacements, and so on. Beyond a certain point, we’d be killing people who originally wouldn’t have done anything wrong. People who might’ve never ended up in positions of power at all, if we hadn’t already killed the first several layers of troublemakers. You can see how the morals of the thing get tangled.”

  Whoever it affects, Ward had said, it’s not their fault. Not really. Under the wrong conditions, anyone could end up the worst person on Earth.

  “I thought it was about me,” Travis said, almost to himself. “I thought I was on track to become . . . someone bad.”

  “Not you,” Garner said. “Others. Many, many others.”

  Travis looked up at him. “Twenty million.”

  Garner’s mouth seemed to have gone dry. He swallowed with a little difficulty, then nodded. “That’s the rough number we came up with, every time we simulated it. If you chose them very precisely, the removal of some twenty million specific people from the world population would leave things unusually stable. Conflicts already under way in places like Congo and Sudan would suddenly lack not only leaders and instigators, but anyone able and willing to fill the vacuum left by them. All the suitable candidates would be dead. The same would be true of every saber-rattling regime in the world, including more than a few that don’t call themselves regimes. The result of all this would be something uncanny. To any observer who didn’t know better, for the next century the human race would seem, by sheer luck, to dodge every potential flashpoint that came along. Every dangerous stare-down between nations would happen to have a JFK or two in the right places to defuse it, instead of the various alphas who’d have normally held those positions. All those aggressive men—and a few women—would’ve been strained right out of history by then. Filtered.”

  “Jesus Christ,” Travis said. He heard a tremor in his own voice.

  “Every one of our simulations showed that a century like that would be enough—would let us get the world on the right track forever. Like a cast for a shattered bone.”

  “Aren’t there easier ways?” Travis said. “If you’re taking that computer to Earth in 2016, can’t you just ask it, once you’re there, for a more benign approach? There has to be something else it could think of.”

  “There’s no end to what it can think of, and many of the alternate ideas would work—but all of them carry even higher death tolls than this one. However you go about it, you’re talking about changing the world. It just doesn’t happen without conflict. Believe me, we’ve had time to consider every approach, and the filter is the benign one. We’re lucky the numbers aren’t worse.”

  “Twenty million people,” Travis said. He went silent, listening to his pulse thudding in his ears. Then he said, “How is it even possible to kill them all?”

  “That’s the function we developed for the computer, taking advantage of how it works: interaction with material at a distance—a whole planet’s worth.”

  “Only at the smallest scale,” Travis said. “Elementary particles. Not even atoms. Quarks.”

  “With the right programming it can do a bit more than that. I told you, it took us forever to set it up. We borrowed a few tricks from the evolution of parasite signals—ways of moving lots of particles all at once.”

  “To do what?”

  “Create simple vibration, mostly—to generate heat. A little point-source of it, about a thousand degrees Celsius, anywhere in the world we choose. Inside someone’s brainstem, for example.”

  Garner saw Travis’s expression and conti
nued quickly: “It’s painless. They don’t even know they’re dying. They just drop where they stand.”

  “All twenty million,” Travis said.

  “In perfect unison.”

  A long silence drew out. Travis stared at Garner, then looked away at nothing. He could feel his heartbeat in his chest now. It sounded like drumming in some vast, empty place.

  “You see now why your role is central to this thing,” Garner said. “It’s your decision whether we come through the channel at all. If you do let us through, we’re going to trigger the filter the moment we arrive. I tell you that for clarity’s sake.”

  “You didn’t have to tell me at all,” Travis said. “You could’ve given me the card and sent me back unaware.”

  “We debated that. Even voted on it. The outcome was pretty close to unanimous. The way we see it, the Earth at the far end of that tunnel isn’t strictly our world. We had ours, and we lost it. The world we’d be coming to is yours. We couldn’t ask you to let us in without knowing the consequences. We believed at least one of you should have the option to veto the idea. I’m sorry it falls to you, Travis. I really am.”

  Travis thought to ask why it did fall to him. Of all the people on Earth in 2016 who had counterparts aboard this ship, there could hardly be a riskier bet to put all the chips on. A young adulthood spent among violent criminals. His own criminal actions and all their consequences. He’d been lucky to reach his forties at all.

  But he didn’t ask the question. After a second’s thought he didn’t need to. He recalled the wooded slope outside the mine shaft. The contractors crouched behind their Humvees. The near-total lack of emotion he’d felt, approaching them with the chef’s knife.

  Necessity pushing remorse aside.

  An animal thing from way back.

  Something he maybe had more of than he should.

  Garner’s eyes took on understanding; he could see that Travis had made the connection for himself.