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【Ender's Game】【14-1】

日期:2009-04-19 09:15
  Chapter 14 -- Ender's Teacher
  "Took your time, didn't you, Graff? The voyage isn't short, but the three
month vacation seems excessive."
  "I prefer not to deliver damaged merchandise."
  "Some men simply have no sense of hurry. Oh well, it's only the fate of
the world. Never mind me, You must understand our anxiety. We're here with
the ansible, receiving constant reports of the progress of our starships.
We have to face the coming war every day. If you can call them days. He's
such a very *little* boy."
  "There's greatness in him. A magnitude of spirit."
  "A killer instinct, too, I hope."
  "Yes."
  "We've planned out an impromptu course of study for him. All subject to
your approval, of course."
  "I'll look at it. I don't pretend to know the subject matter, Admiral
Chamrajnagar. I'm only here because I know Ender. So don't be afraid that
I'll try to second guess the order of your presentation. Only the pace."
  "How much can we tell him?"
  "Don't waste his time on the physics of interstellar travel."
  "What about the ansible?"
  "I already told him about that, and the fleets. I said they would arrive
at their destination within five years."
  "It seems there's very little left for us to tell him."
  "You can tell him about the weapons systems. He has to know enough to
make intelligent decisions."
  "Ah. We can be useful after all, how very kind, We've devoted one of the
five simulators to his exclusive use."
  "What about the others?"
  "The other simulators?"
  "The other children."
  "You were brought here to take care of Ender Wiggin."
  "Just curious. Remember, they were all my students at one time or
another."
  "And now they are all mine. They are entering into the mysteries of the
fleet, Colonel Graff, to which you, as a soldier, have never been
introduced."
  "You make it sound like a priesthood."
  "And a god. And a religion. Even those of us who command by ansible know
the majesty of flight among the stars. I can see you find my mysticism
distasteful. I assure you that your distaste only reveals your ignorance.
Soon enough Ender Wiggin will also know what I know; he will dance the
graceful ghost dance through the stars, and whatever greatness there is
within him will be unlocked, revealed, set forth before the universe far
all to see. You have the soul of a stone, Colonel Graff, but I sing to a
stone as easily as to another singer. You may go to your quarters and
establish yourself."
  "I have nothing to establish except the clothing I'm wearing."
  "You own nothing?"
  "They keep my salary in an account somewhere on Earth. I've never needed
it. Except to buy civilian clothes on my vacation."
  "A non-materialist. And yet you are unpleasantly fat. A gluttonous
ascetic? Such a contradiction."
  "When I'm tense, I eat. Whereas when you're tense, you spout solid
waste."
  "I like you, Colonel Graff. I think we shall get along."
  "I don't much care, Admiral Chamrajnagar. I came here for Ender. And
neither of us came here for you."

  ------------------------------------------------------------------------

  Ender hated Eros from the moment he shuttled down from the tug. He had
been uncomfortable enough on Earth, where floors were flat; Eros was
hopeless. It was a roughly spindle-shaped rock only six and a half
kilometers thick at its narrowest point. Since the surface of the planet
was entirely devoted to absorbing sunlight and converting it to energy,
everyone lived in the smooth-walled rooms linked by tunnels that laced the
interior of the asteroid. The closed-in space was no problem for Ender --
what bothered him was that all the tunnel floors noticeably sloped
downward. From the start, Ender was plagued by vertigo as he walked through
the tunnels, especially the ones that girldled Eros's narrow circumference.
It did not help that gravity was only half of Earth-normal -- the illusion
of being on the verge of falling was almost complete.
  There was also something disturbing about the proportions of the rooms --
the ceilings were too low for the width, the tunnels too narrow. It was not
a comfortable place.
  Worst of all, though, was the number of people. Ender had no important
memories of cities of Earth. His idea of a comfortable number of people was
the Battle School, where he had known by sight every person who dwelt
there. Here, though, ten thousand people lived within the rock. There was
no crowding, despite the amount of space devoted to iife support and other
machinery. What bothered Ender was that he was constantly surrounded hy
strangers.
  They never let him come to know anyone. He saw the other Command School
students often, but since be never attended any class regularly, they
remained only faces. He would attend a lecture here or there, but usually
he was tutored y one teacher after another, or occassionally helped to
learn a process by another student, whom he met once and never saw again.
He ate alone or with Colonel Graff. His recreation was in a gym, but he
rarely saw the same people in it twice.
  He recognized that they were isolating him again, this time not by
setting the other students to hating him, but rather by giving them no
opportunity to become friends. He could hardly have been close to most of
them anyway -- except for Ender, the other students were all well into
adolescence.
  So Ender withdrew into his studies and learned quickly and well.
Astrogation and military history he absorbed like water; abstract
mathematics was more difficult, but whenever he was given a problem that
involved patterns in space and time, he found that his intuition was more
reliable than his calculation -- he often saw at once a solution that he
could only prove after minutes or hours of manipulating numbers.
  And for pleasure, there was the simulator, the most perfect videogame he
had ever played. Teachers and students trained him, step by step, in its
use. At first, not knowing the awesome power of the game, he had played
only at the tactical level, controlling a single fighter in continuous
maneuvers to find and destroy an enemy. The computer-controlled enemy was
devious and powerful, and whenever Ender tried a tactic he found the
computer using it against him within minutes.
  The game was a holographic display, and his fighter was represented only
by a tiny light. The enemy was another light of a different color, and they
danced and spun and maneuvered through a cube of space that must have been
ten meters to a side. The controls were powerful. He could rotate the
display in any direction, so he could watch from any angle, and he could
move the center so that the duel took place nearer or farther from him.
  Gradually, as he became more adept at controlling the fighter's speed,
direction of movement, orientation, and weapons, the game was made more
complex. He might have two enemy ships at once; there might be obstacles,
the debris of space; he began to have to worry about fuel and limited
weapons; the computer began to assign him particular things to destroy or
accomplish, so that he had to avoid distractions and achieve an objective
in order to win.
  When he had mastered the one-fighter game, they allowed him to step back
into the four-fighter squadron. He spoke commands to simulated pilots of
four fighters, and instead of merely carrying out the computer's
instructions, he was allowed to determine tactics himself, deciding which
of several objectives was the most valuable and directing his squadron
accordingly. At any time he could take personal command of one of the
fighters for a short time, and at first he did this often; when he did,
however, the other three fighters in his squadron were soon destroyed, and
as the games became harder and harder he had to spend more and more of his
time commanding the squadron. When he did, he won more and more often.
  By the time he had been at Command School for year, he was adept at
running the simulator at any of fifteen levels, from controlling an
individual fighter to commanding a fleet. He had long since realized that
as the battleroom was to Battle School, so the simulator was to Command
School. The classes were valuable, but the real education was the game.
People dropped in from time to time to watch him play. They never spoke --
hardly anyone ever did, unless they had something specific to teach him.
The watchers would stay, silently, watching him run through a difficult
simulation, and then leave just as he finished. What are you doing, he
wanted to ask. Judging me? Determining whether you want to trust the fleet
to me? Just remember that I didn't ask for it.
  He found that a great deal of what he learned at Battle School
transferred to the simulator. He would routinely reorient the simulator
every few minutes, rotating it so that he didn't get trapped into an
up-down orientation, constantly reviewing his positoon from the enemy point
of view. It was exhilarating at last to have such control over the battle,
to be able to see every point of it.
  It was also frustrating to have so little control, too, for the
computer-controlled fighters were only as good as the computer allowed.
They took no initiative. They had no intelligence. He began to wish for his
toon leaders, so that he could count on some of the squadrons doing well
without having his constant supervision.
  At the end of his first year he was winning every battle on the
simulator, and played the game as if the machine were a natural part of his
body. One day, eating a meal with Graff, he asked, "Is that all the
simulator does?"
  "Is what all?"
  "The way it plays now, It's easy, and it hasn't got any harder for a
while."
  "Oh."
  Graff seemed unconcerned. But then, Graff always seemed unconcerned. The
next day everything changed. Graff went away, and in his place they gave
Ender a companion.

  ------------------------------------------------------------------------

  He was in the room when Ender awoke in the morning. He was an old man,
sitting cross-legged on the floor. Ender looked at him expectantly, waiting
for the man to speak. He said nothing. Ender got up and showered and
dressed, content to let the man keep his silence if he wanted. He had long
since learned that when something unusual was going on, something that was
part of someone else's plan and not his own, he would find out more
information by waiting than by asking. Adults almost always lost their
patience before Ender did.
  The man still hadn't spoken when Ender was ready and went to the door to
leave the room. The door didn't open. Ender turned to face the man sitting
on the floor. He looked to be about sixty, by far the oldest man Ender had
seen on Eros. He had a day's growth of white whiskers that grizzled his
face only slightly less than his close-cut hair. His face sagged a little
and his eyes were surrounded by creases and lines. He looked at Ender with
an expression that bespoke only apathy.
  Ender turned back to the door and tried again to open it.
  "All right," he said, giving up. "Why's the door locked?"
  The old man continued to look at him blankly.
  So this is a game, thought Ender. Well, if they want me to go to class,
they'll unlock the door. If they don't, they won't. I don't care.
  Ender didn't like games where the rules could be anything and the
objective was known to them alone. So he wouldn't play. He also refused to
get angry. He went through a relaxing exercise as he leaned on the door,
and soon he was calm again. The old man continued to watch him impassively.
  It seemed to go on for hours, Ender refusing to speak, the old man
seeming to be a mindless mute.
  Sometimes Ender wondered if he were mentally ill, escaped from some
medical ward somewhere in Eros, living out some insane fantasy here in
Ender's room. But the longer it went on, with no one coming to the door, no
one looking for him, the more certain he became that this was something
deliberate, meant to disconcert him. Ender did not want to give the old man
the victory. To pass the time he began to do exercises. Some were
impossible without the gym equipment, but others, especially from his
personal defense class, he could do without any aids.
  The exercises moved him around the room. He was practicing lunges and
kicks. One move took him near the old man, as he had come near him before,
but this time the old claw shot out and seized Ender's left leg in the
middle of a kick. It pulled Ender off his feet and landed him heavily on
the floor.
  Ender leapt to his feet immediately, furious. He found the old man
sitting calmly, cross-legged, not breathing heavily, as if he had never
moved. Ender stood poised to fight, but the other's immobility made it
impossible for Ender to attack. What, kick the old man's head off? And then
explain it to Graff -- oh, the old man kicked me, and I had to get even.
  He went back to his exercises; the old man kept watching.
  Finally, tired and angry at this wasted day, a prisoner in his room,
Ender went back to his bed to get his desk. As he leaned over to pick up
the desk, he felt a hand jab roughly between his thighs and another hand
grab his hair. In a moment he had been turned upside down. His face and
shoulders were being pressed into the floor by the old man's knee, while
his back was excruciatingly bent and his legs were pinioned by the old
man's arm.
  Ender was helpless to use his arms, he couldn't bend his back to gain
slack so he could use his legs. In less than two seconds the old man had
completely defeated Ender Wiggin.
  "All right," Ender gasped. "You win."
  The man's knee thrust painfully downward. "Since when," asked the man,
his voice soft and rasping, "do you have to tell the enemy when be has
won?"
  Ender remained silent.
  "I surprised you once, Ender Wiggin. Why didn't you destroy tne
immediately afterward? Just because I looked peaceful? You turned your back
on me. Stupid. You have learned nothing. You have never had a teacher."
  Ender was angry now, and made no attempt to control or conceal it. "I've
had too many teachers, how was I supposed to know you'd turn out to be a--"
  "Au enemy, Ender Wiggin," whispered the old man. "I am your enemy, the
first one you've ever had who was smarter than you. There is no teacher but
the enemy. No one but the enemy will ever tell you what the enemy is going
tu do. No one but the enemy will ever teach you how to destroy and conquer.
Only the enemy shows you where you are weak. Only the enemy tells you where
he is strong. And the only rules of the game are what you can do to him and
what you can stop him from doing to you. I am your enemy from now on. From
now on I am your teacher."
  Then the old man let Ender's legs fall. Because he still held Ender's
head to the floor, the boy couldn't use his arms to compensate, and his
legs hit the surface with a loud crack and a sickening pain. Then the old
man stood and let Ender rise.
  Slowly Ender pulled his legs under him, with a faint groan of pain. He
knelt on all fours for a moment, recovering. Then his right arm flashed
out, reaching for his enemy. The old man quickly danced back, and Ender's
hand closed on air as his teacher's foot shot forward to catch Ender on the
chin.
  Ender's chin wasn't there. He was lying flat on his back, spinning on the
floor, and during the moment that his teacher was off balance from his
kick, Ender's feet smashed into the old man's other leg. He fell in a heap
-- but close enough to strike out and hit Ender in the face. Ender couldn't
find an arm or a leg that held still long enough to be grabbed, and in the
meantime blows were landing on his back and arms. Ender was smaller -- he
couldn't reach past the old man's flailing limbs. Finally he managed to
pull away and scramble back near the door.
  The old man was sitting cross-leged again, but now the apathy was gone.
He was smiling. "Better, this time, boy. But slow. You will have to be
better with a fleet than you are with your body or no one will be safe with
you in command. Lesson learned?"
  Ender nodded slowly. He ached in a hundred places.
  "Good," said the old man. "Then we'll never have to have such a battle
again. All the rest with the simulator. I will program your battles now,
not the computer; I will devise the strategy of your enemy, and you will
learn to be quick and discover what tricks the enemy has for you. Remember,
boy. From now on the enemy is more clever than you. From now on the enemy
is stronger than you. From now on you are always about to lose."
  The old man's face grew serious again. "You will be about to lose, Ender,
but you will win. You will learn to defeat the enemy. He will teach you
how."
  The teacher got up. "In this school, it has always been the practice for
a young student to be chosen by an older student. The two become
companions, and the older boy teaches the younger one everything he knows.
Always they fight, always they compete, always they are together. I have
chosen you."
  Ender spoke as the old man walked to the door. "You're too old to be a
student."
  "One is never too old to be a student of the enemy. I have learned from
the buggers. You will learn from me."
  As the old man palmed the door open, Ender leaped into the air and kicked
him in the small of the back with both feet. He hit hard enough that he
rebounded onto his feet, as the old man cried out and collapsed on the
floor.
  The old man got up slowly, holding onto the door handle, his face
contorted with pain. He seemed disabled, but Ender didn't trust him. Yet in
spite of his suspicion, he was caught off guard by the old man's speed. In
a moment he found himself on the floor near the opposite wall, his nose and
lip bleeding where his face had hit the bed. He was able to turn enough to
see the old man standing in the doorway, wincing and holding his back. The
old man grinned.
  Ender grinned back. "Teacher," he said. "Do you have a name?"
  "Mazer Rackham," said the old man. Then he was gone.

  ------------------------------------------------------------------------

  From then on, Ender was either with Mazer Rackham or alone. The old man
rarely spoke, but he was there; at meals, at tutorials, at the simulator,
in his room at night. Sometimes Mazer would leave, but always, when Mazer
wasn't there, the door was locked, and no one came until Mazer returned.
Ender went through a week in which he called him Jailor Rackham, Mazer
answered to the name as readily as to his own, and showed no sign that it
bothered him at all. Ender soon gave it up.
  There were compensations -- Mazer took Ender through the videos of the
old batties from the First Invasion and the disastrous defeats of the IF in
the Second Invasion. These were not pieced together from the censored
public videos, but whole and continuous. Since many videos were working in
the major battles, they studied bugger tactics and strategies from many
angles. For the first time in his life, a teacher was pointing out things
that Ender had not already seen for himself. For the first time, Ender had
found a living mind he could admire.
  "Why aren't you dead?" Ender asked him. "You fought your battle seventy
years ago. I don't think you're even sixty years old."
  "The miracles of relativity," said Mazer. "They kept me here for twenty
years after the battle, even though I begged them to let me command one of
the starships they launched against the bugger home planet and the bugger
colonies. Then they -- came to understand some things about the way
soldiers behave in the stress of battle."
  "What things?"
  "You've never been taught enough psyholgy to understand. Enough to say
that they realized that even though I would never be able to command the
fleet -- I'd be dead before the fleet even arrived -- I was still the only
person able to understand the things I understood about the buggers. I was,
they realized, the only person who had ever defeated the bugeers by
intelligence rather than luck. They needed me here to teach the person who
*could* command the fleet."
  "So they sent you out in a starship, got you up to a relativistic
speed--"
  "And then I turned around and came home. A very dull voyage, Ender. Fifty
years in space. Officially, only eight years passed for me, but it felt
like five hundred. All so I could teach the next commander everything I
knew."
  "Am I to be the commander, then?"
  "Let's say that you're our best bet at present."
  "There are others being prepared, too?"
  "No."
  "That makes me the only choice, then, doesn't it'?"
  Mazer shrugged.
  "Except you. You're still alive, aren't you? Why not you?"
  Mazer shook his head.
  "Why not? You won before."
  "I cannot be the commander for good and sufficient reasons."
  "Show me how you beat the buggers, Mazer."
  Mayer's face went inscruta ble.
  "You've shown me every other battle seven times at least. I think I've
seen ways to beat what the buggers did before, but you've never shown me
how you actually did beat them."
  "The video is a very tightly kept secret, Ender."
  "I know. I've pieced it together, partly. You, with your tiny reserve
force, and their armada, those great big heavy-bellied starships launching
their swarms of fighters. You dart in at one ship, fire at it, an
explosion. That's where they always stop the clips. After that, it's just
soldiers going into bugger ships and already finding them dead inside."
  Mazer grinned. "So much for tightly kept secrets. Come on, let's watch
the video."
  They were alone in the video room, and Ender palmed the door locked. "All
right, let's watch."
  The video showed exactly what Ender had pieced together. Mazer's suicidal
plunge into the heart of the enemy formation, the single explosion, and
then--
  Nothing. Mazer's ship went on, dodged the shock wave, and wove his way
among tOe other bugger ships. They did not fire on him. They did not change
course. Two of them crashed into each other and exploded a needless
collision that either pilot could have avoided. Neither made the slightest
movement.
  Mazer sped up the action. Skipped ahead. "We waited for three hours," he
said. "Nobody could believe it." Then the IF ships began approaching the
bugger starships. Marines began their cutting and boarding operations. The
videos showed the buggers already dead at their posts.
  "So you see," said Mazer, "you already knew all there was to see."
  "Why did it happen?"
  "Nobody knows. I have my personal opinions. But there are plenty of
scientists who tell me I'm less than qualified to have opinions."
  "You're the one who won the battle."
  "I thought that qualified me to comment, too, but you know how it is.
Xenobiologists and xenopsychologists can't accept the idea that a starpilot
scooped them by sheer guesswork. I think they all hate me because, after
they saw these videos, they had to live out the rest of their natural lives
here on Eros. Security, you know. They weren't happy."
  "Tell me."
  "The buggers don't talk. They think to each other, and it's instantaneous
like the philotic effect. Like the ansible. But most people always thought
that meant a controlled comunication like language -- I think you a thought
and then you answer me. I never believed that. It's too immediate, the way
they respond together to things. You've seen the videos. They aren't
conversing and deciding among possible courses of action. Every ship acts
like part of a single organism. It responds the way your body responds
during combat, different parts automatically, thoughtlessly doing
everything they're supposed to do. They aren't having a mental conversation
between peopie with different thought processes. All their thoughts are
present, together, at once."
  "A single person, and each bugger is like a hand or a foot?"
  "Yes. I wasn't the first person to suggest it, but I was the first person
to believe it. And something else. Something so childish and stupid that
the xenobiologists laughed me to silence when I said it after the battle.
The buggers are bugs. They're like ants and bees. A queen, the workers.
That was maybe a hundred million years ago, but that's how they started,
that kind of pattern. It's a sure thing none of the buggers we saw had any
way of making more little buggers. So when they evolved this ability to
think together, wouldn't they still keep the queen? Wouldn't the queen
still be the center of the group? Why would that ever change?"
  "So it's the queen who controls the whole group."
  "I had evidence, too. Not evidence that any of them could see. lt wasn't
there in the First Invasion, because that was exploratory. But the Second
Invasion was a colony. To set up a new hive, or whatever."
  "And so they brought a queen."
  "The videos of the Second Invasion, when they were destroying our fleets
out in the comet shell." He began to call them up and display the buggers'
patterns. "Show me the queen's ship."
  It was subtle. Ender couldn't see it for a long time. The bugger ships
kept moving, all of them. There was no obvious flagship, no apparent nerve
center. But gradually, as Mazer played the videos over and over again,
Ender began to see the way that all the movements focused on, radiated from
a center point. The center point shifted, but it was obvious, after he
looked long enough, that the eyes of the fleet, the *I* of the fleet, the
perspective from which all decisions were being made, was one particular
ship. He pointed it out.
  "You see it. I see it. That makes two people out of all of those who have
seen this video. But it's true, isn't it."
  "They make that ship move just like any other ship."
  "They know it's their weak point."
  "But you're right. That's the queen. But then you'd think that when you
went for it, they would have immediately focused all their power on you.
They could have blown you out of the sky."
  "I know. That part I don't understand. Not that they didn't try to stop
me -- they were firing at me. But it's as if they really couldn't believe,
until it was too late, that I would actually kill the queen. Maybe in their
world, queens are never killed, only captured, only checkmated. I did
something they didn't think an enemy would ever do."
  "And when she died vhe others all died,"
  "No, they just went stupid. The first ships we boarded, the buggers were
still alive. Organically. But they didn't move, didn't respond to anything,
even when our scientists vivisected some of them to see if we could learn a
few more things about buggers. After a while they all died. No will.
There's nothing in those little bodies when the queen is gone."
  "Why don't they believe you?"
  "Because we didn't find a queen."
  "She got blown to pieces."
  "Fortunes of war. Biology takes second place to survival. But some of
them are coming around to my way of thinking. You can't live in this place
without the evidence staring you in the face."
  "What evidence is there in Eros?"
  "Ender, look around you. Human beings didn't carve this place. We like
taller ceilings, for one thing. This was the buggers' advance post in the
First Invasion. They carved this place out before we even knew they were
here. We're living in a bugger hive. But we already paid our rent. lt cost
the marines a thousand lives to clear them out of these honeycombs, room by
room. The buggers fought for every meter of it."
  Now Ender understood why the rooms had always felt wrong to him. "I knew
this wasn't a human place."
  "This was the treasure trove. If they had known we would win that first
war, they probably' would never have built this place. We learned gravity
manipulation because they enhanced the gravity here. We learned efficient
use of stellar energy because they blacked out this planet. In fact, that's
how we discovered them. In a period of three days, Eros gradually
disappeared from telescopes. We sent a tug to find out why. It found out.
The tug transmitted its videos, including the buggers boarding and
slaughtering the crew. It kept right on transmitting through the entire
bugger examination of the boat. Not until they finally dismantled the
entire tug did the transmissions stop. It was their blindness -- they never
had to transmit anything by machine, and so with the crew dead, it didn't
occur to them that anybody could be watching."
  "Why did they kill the crew?"
  "Why not? To them, losing a few crew members would be like clipping your
nails. Nothing to get upset about. They probably thought they were
routinely shutting down our communications by turning off the workers
running the tug. Not murdering living, sentient beings with an independent
genetic future. Murder's no big deal to them. Only queen-killing, really,
is murder, because only queen-killing closes off a genetic path."
  "So they didn't know what they were doing."
  "Don't start apologizing for them, Ender. Just because they didn't know
they were killing human beings doesn't mean they weren't killing human
beings. We do have a right to defend ourselves as best we can, and the only
way we found that works is killing the buggers before they kill us. Think
of it this way. In all the bugger wars so far, they've killed thousands and
thousands of living, thinking beings. And in all those wars, we've killed
only one."
  "If you hadn't killed the queen, Mazer, would we have lost the war?"
  "I'd say the odds would have been three to two against us. I still think
I could have trashed their fleet pretty badly before they burned us out.
They have great response time and a lot of firepower, but we have a few
advantages, too. Every single one of our ships contains an intelligent
human being who's thinking on his own. Every one of us is capable of coming
up with a brilliant solution to a problem. They can only come up with one
brilliant solution at a time. The buggers think fast, but they aren't smart
all over. Even when some incredibly timid and stupid commanders lost the
major battles of the Second Invasion, some of their subordinates were able
to do real damage to the bugger fleet."
  "What about when our invasion reaches them? Will we just get the queen
again?"
  "The buggers didn't learn interstellar travel by being dumb. That was a
strategy that could work only once. I suspect that we'll never get near a
queen unless we actually make it to their home planet. After all, the queen
doesn't have to be with them to direct a battle. The queen only has to be
present to have little baby buggers. The Second invasion was a colony --
the queen was coming to populate the Earth. But this time -- no, that won't
work. We'll have to beat them fleet by fleet. And because they have the
resources of dozens of star systems to draw on, my guess is they'll
outnumber us by a lot, in every battle."
  Ender remembered his battle against two armies at once. And I thought
they were cheating. When the real war begins, it'll be like that every
time. And there won't be any gate I can go for.
  "We've only got two things going for us, Ender. We don't have to aim
particularly well. Our weapons have great spread."
  "Then we aren't using the nuclear missiles from the First and Second
Invasions?"
  "Dr. Device is much more powerful. Nuclear weapons, after all, were weak
enough to be used on Earth at one time. The Little Doctor could never be
used on a planet. Still, I wish I'd had one during the Second Invasion."
  "How does it work?"
  "I don't know, not well enough to build one. At the focal point of two
beams, it sets up a field in which molecules can't hold together anymore.
Electrons can't be shared. How much physics do you know, at that level?"
  "We spend most of our time on astrophysics, but I know enough to get the
idea."
  "The field spreads out in a sphere, but it gets weaker the farther it
spreads. Except that where it actually runs into a lot of molecules, it
gets stronger and starts over. The bigger the ship, the stronger the new
field."
  "So each time the field hits a ship, it sends out a new sphere--"
  "And if their ships are too close together, it can set up a chain that
wipes them all out. Then the field dies down, the molecules come back
together, and where you had a ship, you now have a lump of dirt with a lot
of iron molecules in it. No radioactivity, no mess. Just dirt. We may be
able to trap them close together on the first battle, but they learn fast.
They'll keep their distance from each other."
  "So Dr. Device isn't a missile -- I can't shoot around corners.
  "That's right. Missiles wouldn't do any good now. We learned a lot from
them in the First Invasion, but they also learned from us -- how to set up
the Ecstatic Shield, for instance."
  "The Little Doctor penetrates the shield?"
  "As if it weren't there. You can't see through the shield to aim and
focus the beams, but since the generator of the Ecstatic Shield is always
in the exact center, it isn't hard to figure it out."
  "Why haven't I ever been trained with this?"
  "You always have. We just let the computer tend to it for you. Your job
is to get into a superior strategic position and choose a target. The
shipboard computers are much better at aiming the Doctor than you are."
  "Why is it called Dr. Device?"
  "When it was developed, it was called a Molecular Detachment Device. M.D.
Device."
  Ender still didn't understand.
  "M.D. The initials stand for Medical Doctor, too. M.D. Device, therefore
Dr. Device. It was a joke." Ender didn't see what was funny about it.

  ------------------------------------------------------------------------

  They had changed the simulator. He could still control the perspective
and the degree of detail, but there were no ship's controls anymore.
Instead, it was a new panel of levers, and a small headset with earphones
and a small microphone.
  The technician who was waiting there quickly explained how to wear the
headset.
  "But how do I control the ships?" asked Ender.
  Mazer explained. He wasn't going to control ships anymore. "You've
reached the next phase of your training. You have experience in every level
of strategy, but now it's time for you to concentrate on commanding an
entire fleet. As you worked with toon leaders in Battle School, so now you
will work with squadron leaders. You have been assigned three dozen such
leaders to train. You must teach them intelligent tactics; you must learn
their strengths and limitations; you must make them into a whole."
  "When will they come here?"
  "They're already in place in their own simulators. You will speak to them
through the headset. The new levers on your control panel enable you to see
from the perspective of any of your squadron leaders. This more closely
duplicates the conditions you might encounter in a real battle, where you
will only know what your ships can see."
  "How can I work with squadron leaders I never see?"
  "And why would you need to see them?"
  "To know who they are, how they think--"
  "You'll learn who they are and how they think from the way they work with
the simulator. But even so, I think you won't be concerned. They're
listening to you right now. Put on the headset so you can hear them."
  Ender put on the headset.
  "Salaam," said a whisner in his ears.
  "Alai," said Ender.
  "And me, the dwarf."
  "Bean."
  And Petra, and Dink; Crazy Tom, Shen, Hot Soup, Fly Molo, all the best
students Ender had fought with or fought against, everyone that Ender had
trusted in Battle School. "I didn't know you were here," he said, "I didn't
know you were coming."
  "They've been flogging us through the simulator for three months now,"
said Dink.
  "You'll find that I'm by far the best tactician," said Petra. "Dink
tries, but he has the mind ot a child."
  So they began working together, each squadron leader commanding
individual pilots, and Ender commanding the squadron leaders. They learned
many ways of working together, as the simulator forced them to try
different situations. Sometimes the simulator gave them a larger fleet to
work with; Ender set them up then in three or four toons that consisted of
three or four squadrons each. Sometimes the simulator gave them a single
starship with its twelve fighters, and he chose three squadron leaders with
four fighters each.
  It was pleasure; it was play. The computer-controlled enemy was none too
bright, and they always won despite their mistakes, their
miscommunications. But in the three weeks they practiced together, Ender
came to know them very well. Dink, who deftly carried out instructions but
was slow to improvise; Bean, who couldn't control large groups of ships
effectively but could use only a few like a scalpel, reacting beautifully
to anything the computer threw at him; Alai, who was almost as good a
strategist as Ender and could be entrusted to do well with half a fleet and
only vague instructions.
  The better Ender knew them, the faster he could deploy them, the better
he could use them. The simulator would display the situation on the screen.
In that moment Ender learned for the first time what his own fleet would
consist of and how the enemy fleet was deployed. It took him only a few
minutes now to call for the squadron leaders that he needed, assign them to
certain ships or groups of ships, and give them their assignments. Then, as
the battle progressed, he would skip from one leader's point of view to
another's, making suggestions and, occasionally, giving orders as the need
arose. Since the others could only see their own battle perspective, he
would sometimes give them orders that made no sense to them; but they, too,
learned to trust Ender. If he told them to withdraw, they withdrew, knowing
that either they were in an exposed position, or their withdrawal might
entice the enemy into a weakened posture. They also knew that Ender trusted
them to do as they judged best when he gave them no orders. If their style
of fighting were not right for the situation they were placed in, Ender
would not have chosen them for that assignment.
  The trust was complete, the working of the fleet quick and responsive.
And at the end of three weeks, Mazer showed him a replay of their most
recent battle, only this time from the enemy's point of view.
  "This is what he saw as you attacked. What does it remind you of? The
quickness of response, for instance?"
  "We look like a bugger fleet."
  "You match them, Ender. You're as fast as they are. And here -- look at
this."
  Ender watched as all his squadrons moved at once, each responding to its
own situation, all guided by Ender's overall command, but daring,
improvising, feinting, attacking with an independence no bugger fleet had
ever shown.
  "The bugger hive-mind is very good, but it can only concentrate on a few
things at once. All your squadrons can concentrate a keen intelligence on
what they're doing, and what they've been assigned to do is also guided by
a clever mind. So you see that you do have some advantages. Superior,
though not irresistible, weaponry; comparable speed and greater available
intelligence. These are your advantages. Your disadvantage is that you will
always, always be outnumbered, and after each battle your enemy will learn
more about you, how to fight you, and those changes will be put into effect
instantly."
  Ender waited for his conclusion.
  "So, Ender, we will now begin your education. We have programmed the
computer to simulate the kinds of situations we might expect in encounters
with the enemy. We are using the movement patterns we saw in the Second
Invasion. But instead of mindlessly following these same patterns, I will
be controlling the enemy simulation. At first you will see easy situations
that you are expected to win handily. Learn from them, because I will
always be there, one step ahead of you, programming more difficult and
advanced patterns into the computer so that your next battle is more
difficult, so that you are pushed to the limit of your abilities."
  "And beyond?"
  "The time is short. You must learn as quickly as you can. When gave
myself to starship travel, just so I would still be alive when you
appeared, my wife and children all died, and my grandchildren were my own
age when I came back. I had nothing to say to them. I was cut off from all
the people that I loved, everything I knew, living in this alien catacomb
and forced to do nothing of importance but teach student after student,
each one so hopeful, each one, ultimately, a weakling, a failure. I teach,
I teach, but no one learns. You, too, have great promise, like so many
students before you, but the seeds of failure may be in you, too. It's my
job to find them, to destroy you if I can, and believe me, Ender, if you
can be destroyed I can do it."
  "So I'm not the first."
  "No, of course you're not. But you're the last. If you don't learn,
there'll be no time to find anyone else. So I have hope for you, only
because you are the only one left to hope for."
  "What about the others? My squadron leaders?"
  "Which of them is fit to take your place?"
  "Alai."
  "Be honest."
  Ender had no answer, then.
  "I am not a happy man, Ender. Humanity does not ask us to be happy. It
merely asks us to be brilliant on its behalf. Survival first, then
happiness as we can manage it. So, Ender, I hope you do not bore me during
your training with complaints that you are not having fun. Take what
pleasure you can in the interstices of your work, but your work is first,
learning is first, winning is everything because without it there is
nothing. When you can give me back my dead wife, Ender, then you can
complain to me about what this education costs you."
  "I wasn't trying to get out of anything."
  "But you will, Ender. Because I am going to grind you down to dust, if I
can. I'm going to hit you with everything I can imagine, and I will have no
mercy, because when you face the buggers they will think of things I can't
imagine, and compassion for human beings is impossible for them."
  "You can't grind me down, Mazer."
  "Oh, can't I?"
  "Because I'm stronger than you."
  Mazer smiled. "We'll see about that, Ender."

 
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