[She stares back; it's probably a good idea to explain it to him, but seeing as she's taken her existence for granted, she still doesn't know where to begin (even after all this time of telling other people).]

Slowly, at first. The furthest memory I have, I was just a small child. Somehow when we reach either a physical age of late teens or adulthood, we just...stop? Or grow increasingly slowly. I've never seen any country appear aged. [After answering this, she gets how it could be totally confusing.]

Yes, it is similar with many of the others too, with their similar worlds. It's all so familiar and sometimes we even experience the same parts of history, but yet our lives are different.