Bella plays the fantasy game again now - it is less fun than flying, all raw physicality and poise, in the battle room, but it now compares favorably with a decent fraction of books. She plays it in front of her launch and the boys want to know where in the hell this setting came from.

"Go to the Giant's Drink and I'll show you," she says.

She bypasses the Drink for six boys. They drift through the clouds, but they don't find villages, or pretty landscapes - they just find parts of the game they've already been to.

"Don't look at me, that's the same way I got here," says Bella. She's teaching her bird-people the scientific method now, painstakingly, almost comically, by mime and enthusiastic gestures. They're getting it, a little; a pink-and-gray one has put a cup of water in the sun and a similar cup of water in the shade and is staring at them intently.

By the time Bella has been at Battle School for six weeks she has tried all the games in the game room, and most of them (apart from the newly fascinating fantasy game) are now only interesting if someone will play against her. Most people won't. She's got too much of an advantage over the controls, and even at Battle School, among what really is a better crop of brains than kindergarten, it's apparently too much to ask that anyone think faster.