"It's not cheating when you're uniquely endowed. I'm just special. And I take it you are, too, in your own way," Sleeper responds to Syl, giving a slight tilt of the head as an acknowledgement.

"They actually move with the wind, not that you can actually see it. The buildings are designed to be pretty resilient. You'd be surprised what it takes to bring one down."

But they've been on other worlds, and architecture is hardly a constant.