"The ships are all protected by forcefields. A certain distance away the weapons are weaker and can't get through. Closer in the weapons are stronger than the shields. But the computers take care of all that. They're constantly firing in any direction that won't hurt one of our ships. The computers pick targets, aim; they do all the detail work. You just tell them when and get them in a position to win. All right?"
"No," Ender twisted the tube of the radio around his fingers. "I have to know how the weapons work."
"I told you, it would take--"
"I can't command a fleet--not even on the simulator--unless I know." Ender waited a moment, then added, "Just the rough idea."
Mazer stood up and walked a few steps away. "All right, Ender. It won't make any sense, but I'll try. As simply as I can." He shoved his hands into his pockets. "It's this way, Ender. Everything is made up of atoms, little particles so small you can't see them with your eyes. These atoms, there are only a few different types, and they're all made up of even smaller particles that are pretty much the same. These atoms can be broken, so that they stop being atoms. So that this metal doesn't hold together anymore. Or the plastic floor. Or your body. Or even the air. They just seem to disappear, if you break the atoms. All that's left is the pieces. And they fly around and break more atoms. The weapons on the ships set up an area where it's impossible for atoms of anything to stay together. They all break down. So things in that area--they disappear."
Ender nodded. "You're right, I don't understand it. Can it be blocked?"
"No. But it gets wider and weaker the farther it goes from the ship, so that after a while a forcefield will block it. OK? And to make it strong at all, it has to be focused so that a ship can only fire effectively in maybe three or four directions at once."
Ender nodded again, but he didn't really understand, not well enough. "If the pieces of the broken atoms go breaking more atoms, why doesn't it just make everything disappear?"
"Space. Those thousands of kilometers between the ships, they're empty. Almost no atoms. The pieces don't hit anything, and when they finally do hit something, they're so spread out they can't do any harm." Mazer cocked his head quizzically. "Anything else you need to know?"
"Do the weapons on the ships--do they work against anything besides ships?"
Mazer moved in close to Ender and said firmly, "We only use them against ships. Never anything else. If we used them against anything else, the enemy would use them against us. Got it?"
Mazer walked away, and was nearly out the door when Ender called to him.
"I don't know your name yet," Ender said blandly.
"Mazer Rackham."
"Mazer Rackham," Ender said, "I defeated you."
Mazer laughed.
"Ender, you weren't fighting me today," he said. "You were fighting the stupidest computer in the Command School, set on a ten-year-old program. You don't think I'd use a sphere, do you?" He shook his head. "Ender, my dear little fellow, when you fight me, you'll know it. Because you'll lose." And Mazer left the room.
Ender still practiced ten hours a day with his toon leaders. He never saw them, though, only heard their voices on the radio. Battles came every two or three days. The enemy had something new every time, something harder--but Ender coped with it. And won every time. And after every battle Mazer would point out mistakes and show Ender that he had really lost. Mazer only let Ender finish so that he would learn to handle the end of the game.
Until finally Mazer came in and solemnly shook Ender's hand and said, "That, boy, was a good battle."
Because the praise was so long in coming, it pleased Ender more than praise had ever pleased him before. And because it was so condescending, he resented it.
"So from now on," Mazer said, "we can give you hard ones."
From then on Ender's life was a slow nervous breakdown.
He began fighting two battles a day, with problems that steadily grew more difficult. He had been trained in nothing but the game all his life, but now the game began to consume him. He woke in the morning with new strategies for the simulator and went fitfully to sleep at night with the mistakes of the day preying on him. Sometimes he would wake up in the middle of the night crying for a reason he didn't remember. Sometimes he woke up with his knuckles bloody from biting them. But every day he went impassively to the simulator and drilled his toon leaders until the battles, and drilled his toon leaders after the battles, and endured and studied the harsh criticism that Rackham piled on him. He noted that Rackham perversely criticized him more after his hardest battles. He noted that every time he thought of a new strategy the enemy was using it within a few days. And he noted that while his fleet always stayed the same size, the enemy increased in numbers every day.
He asked his teacher.
"We are showing you what it will be like when you really command. The ratios of enemy to us."
"Why does the enemy always outnumber us?"
Mazer bowed his gray head for a moment, as if deciding whether to answer. Finally he looked up and reached out his hand and touched Ender on the shoulder. "I will tell you, even though the information is secret. You see, the enemy attacked us first. He had good reason to attack us, but that is a matter for politicians, and whether the fault was ours or his, we could not let him win. So when the enemy came to our worlds, we fought back, hard, and spent the finest of our young men in the fleets. But we won, and the enemy retreated."
Mazer smiled ruefully. "But the enemy was not through, boy. The enemy would never be through. They came again, with more numbers, and it was harder to beat them. And another generation of young men was spent. Only a few survived. So we came up with a plan--the big men came up with the plan. We knew that we had to destroy the enemy once and for all, totally, eliminate his ability to make war against us. To do that we had to go to his home worlds--his home world, really, since the enemy's empire is all tied to his capital world."
"And so?" Ender asked.
"And so we made a fleet. We made more ships than the enemy ever had. We made a hundred ships for every ship he had sent against us. And we launched them against his twenty-eight worlds. They started leaving a hundred years ago. And they carried on them the ansible, and only a few men. So that someday a commander could sit on a planet somewhere far from the battle and command the fleet. So that our best minds would not be destroyed by the enemy."