The world building of this year’s story wrote itself. (I wish this had been the case with the story) I’d been interested in modern nomadic subcultures ever since I introduced the mastodon drivers in the second story. I found myself looking into examples of such modern subcultures that would use mastodon like creatures as beasts of burdon. The best example I could find were circuses. From there it wasn’t much of a stretch to imagine circus tents as a portable mastodon barn.