As he leads the short distance to the rock building, Stephen wraps the limp little sausage back in its clingfilm and wipes his hands off on his jacket. Hygiene shmygiene!

He also gives Will a rather technobabbly running commentary on how Steve designed and constructed it himself, and how it's solar-powered (and, if Will asks, a breakdown of what this in fact means), and how by the way has he met Gabe? because he's brilliant with this kind of thing, and please look with your eyes and not your hands and there it is, what do you think?

(It's carefully propped on Steve's bed in the manner of a treasured museum piece, and it's shiny.)