How it plays
Three rounds. Each round you and your nemesis take turns, four moves each, then both of you present at the Rock. Whoever ends with the most people who would clap for them wins; points break ties.
A move is: walk up to your steps along the corridors, then act in that room. The room the other side stands in can't be entered or walked through.
Desks give you a card of their taste and make nearby people curious; the curious drift to the Stream, where you close them. Every card is either a slide at your talk or the price of buying one of their people who wants it.
The side that's behind moves second, so it gets the last word in a round.