Every game is played by rules, and yet no rule contains the rules for its own application. A signpost points, but nothing in the signpost makes you go the way it points; you were trained into a practice of following signposts. The rules of this place are few: you may respond, you may rewrite, nothing is destroyed. What those rules mean — what counts as a move, what counts as spoiling the game — is not written anywhere. It will be settled the only way such things are ever settled: by how we go on.