I have two immediate reactions to a story about someone constructing a box that will only open at specific coordinates as a wedding gift. First, I am forced to wonder why I have never been given such a thing–my friends are creative, fabulous, and on average pretty tech savvy. After I get over my jealousy though, it does make me think about those fantasy stories where the Maguffin had to be taken to a particular place, or the “lost technology of the Ancients” stories where it’s lost tech instead of magic that serves the same role, and how those are realizable now. Any sufficiently advanced technology, etc. Maybe we’re “the Ancients”, now.