"When I asked it how to preserve Earth from the invaders it just answered 'A Stitch in Time Saves Nine,' and wouldn't interpret it."
"And that sounds like very good sense, too," said Anne in earnest tones. "But it's a little late, isn't it? After all, the invaders are already invading us, aren't they?"
"It has some deeper meaning than the usual one," said John. "If I could only figure out what it is."
Anne nodded vigorously. "I suppose Buster's talking about space-stitching," she said. "Although I can never quite remember just what that is. Or just how it works, rather."
She waited expectantly for a few moments and then plaintively asked, "What is it, dear?"
"What's what?"
"Stitching, silly. I already asked you."
"Darling," said John with reasonable patience, "I must have explained inter-planar travel to you at least a dozen times."
"And you always make it so crystal clear and easy to understand at the time," said Anne. She wrinkled her smooth forehead. "But somehow, later, it never seems quite so plain when I start to think about it by myself. Besides, I like the way your eyebrows go up and down while you explain something you think I won't understand. So tell me again. Please."