Matilda is practically glowing. She never knew computers were so interesting; she never knew she could learn so much so fast without a book in front of her. In theory, now, she could build this laptop from atoms. It's amazing.

"You're the best bad guy," she concludes. "And the best teacher." Which is a real distinction, because he's competing with Jennifer Honey for that title, but Jenny has lots of other things to be the best at and can afford to give up this one.