Bean was four decks above the mess level where he was supposed to be right now. There were kids moving through here, but nowhere near as many as the deck below. Most of the doors were unmarked, but a few stood open, including one wide arch that opened into a game room.

Bean had seen computer games in some of the bars in Rotterdam, but only from a distance, through the doors and between the legs of men and women going in and out in their endless search for oblivion. He had never seen a child playing a computer game, except on the vids in store windows. Here it was real, with only a few players catching quick games between classes so that each game's sounds stood out. A few kids playing solo games, and then four of them playing a four-sided space game with a holographic display. Bean stood back far enough not to intrude in their sightlines and watched them play. Each of them controlled a squadron of four tiny ships, with the goal of either wiping out all the other fleets or capturing – but not destroying – each player's slow-moving mothership. He learned the rules and the terminology by listening to the four boys chatter as they played.

The game ended by attrition, not by any cleverness – the last boy simply happened to be the least stupid in his use of his ships. Bean watched as they reset the game. No one put in a coin. The games here were free.

Bean watched another game. It was just as quick as the first, as each boy committed his ships clumsily, forgetting about whichever one was not actively engaged. It was as if they thought of their force as one active ship and three reserves.

Maybe the controls didn't allow anything different. Bean moved closer. No, it was possible to set the course for one, flip to control another ship, and another, then return to the first ship to change its course at any time.

How did these boys get into Battle School if this was all they could think of? Bean had never played a computer game before, but he saw at once that any competent player could quickly win if this was the best competition available.

"Hey, dwarf, want to play?"

One of them had noticed him. Of course the others did, too.

"Yes," said Bean.

"Well Bugger that," said the one who invited him. "Who do you think you are, Ender Wiggin?"

They laughed and then all four of them walked away from the game, heading for their next class. The room was empty. Class time.

Ender Wiggin. The kids in the corridor talked about him, too. Something about Bean made these kids think of Ender Wiggin. Sometimes with admiration, sometimes with resentment. This Ender must have beaten some older kids at a computer game or something. And he was at the top of the standings, that's what somebody said. Standings in what?

The kids in the same uniform, running like one crew, heading for a fight – that was the central fact of life here. There was one core game that everyone played. They lived in barracks according to what team they were on. Every kid's standings were reported so everybody else knew them. And whatever the game was, the adults ran it.

So this was the shape of life here. And this Ender Wiggin, whoever he was, he was at the top of it all, he led the standings.

Bean reminded people of him.

That made him a little proud, yes, but it also annoyed him. It was safer not to be noticed. But because this other small kid had done brilliantly, everybody who saw Bean thought of Ender and that made Bean memorable. That would limit his freedom considerably. There was no way to disappear here, as he had been able to disappear in crowds in Rotterdam.

Well, who cared? He couldn't be hurt now, not really. No matter what happened, as long as he was here at Battle School he would never be hungry. He'd always have shelter. He had made it to heaven. All he had to do was the minimum required to not get sent home early. So who cared if people noticed him or not? It made no difference. Let them worry about their standings. Bean had already won the battle for survival, and after that, no other competition mattered.

But even as he had that thought, he knew it wasn't true. Because he did care. It wasn't enough just to survive. It never had been. Deeper than his need for food had been his hunger for order, for finding out how things worked, getting a grasp on the world around him. When he was starving, of course he used what he learned in order to get himself into Poke's crew and get her crew enough food that there would be enough to trickle some down to him at the bottom of the pecking order. But even when Achilles had turned them into his family and they had something to eat every day, Bean hadn't stopped being alert, trying to understand the changes, the dynamics in the group. Even with Sister Carlotta, he had spent a lot of effort trying to understand why and how she had the power to do for him what she was doing, and the basis on which she had chosen him. He had to know. He had to have the picture of everything in his mind.

Here, too. He could have gone back to the barracks and napped. Instead, he risked getting in trouble just to find out things that no doubt he would have learned in the ordinary course of events.

Why did I come up here? What was I looking for?

The key. The world was full of locked doors, and he had to get his hands on every key.

He stood still and listened. The room was nearly silent. But there was white noise, background rumble and hiss that made it so sounds didn't carry throughout the entire station.

With his eyes closed, he located the source of the faint rushing sound. Eyes open, he then walked to where the vent was. An out-flowing vent with slightly warmer air making a very slight breeze. The rushing sound was not the hiss of air here at the vent, but rather a much louder, more distant sound of the machinery that pumped air throughout the Battle School.

Sister Carlotta had told him that in space, there was no air, so wherever people lived, they had to keep their ships and stations closed tight, holding in every bit of air. And they also had to keep changing the air, because the oxygen, she said, got used up and had to be replenished. That's what this air system was about. It must go everywhere through the ship.

Bean sat before the vent screen, feeling around the edges. There were no visible screws or nails holding it on. He got his fingernails under the rim and carefully slid his fingers around it, prying it out a little, then a little more. His fingers now fit under the edges. He pulled straight forward. The vent came free, and Bean toppled over backward.

Only for a moment. He set aside the screen and tried to see into the vent. The vent duct was only about fifteen centimeters deep from front to back. The top was solid, but the bottom was open, leading down into the duct system.

Bean sized up the vent opening just the way he had, years before, stood on the seat of a toilet and studied the inside of the toilet tank, deciding whether he could fit in it. And the conclusion was the same – it would be cramped, it would be painful, but he could do it.

He reached an arm inside and down. He couldn't feel the bottom. But with arms as short as his, that didn't mean much. There was no way to tell by looking which way the duct went when it got down to the floor level. Bean could imagine a duct leading under the floor, but that felt wrong to him. Sister Carlotta had said that every scrap of material used to build the station had to be hauled up from Earth or the manufacturing plants on the moon. They wouldn't have big gaps between the decks and the ceilings below because that would be wasted space into which precious air would have to be pumped without anyone breathing it. No, the ductwork would be in the outside walls. It was probably no more than fifteen centimeters deep anywhere.

He closed his eyes and imagined an air system. Machinery making a warm wind blow through the narrow ducts, flowing into every room, carrying fresh breathable air everywhere.