"I know you will," he says. "I wouldn't have spent the time on it if I didn't."

He would have treated his very own computer with a care beyond reverence if he could have had one when he was young, so he knows she'll do the same. Especially a computer like this one.

"It's got those lottery numbers you wanted on it," he adds. "I'll show you how to delete them so they can't be recovered when you need to."

Just in case anyone other than himself or Matilda who might have access to it could actually get into the harddrive to retrieve them. Which they couldn't. But it's best for her to learn early about covering her tracks.