ask students to draw an overhead diagram of how they typically occupy a room in public space. Again, there is puzzlement, but their curiosity is piqued. I specify that it must be an enclosed space in which there is no pre-assigned seating. It could be a café, a bus, a theatre, a classroom — any kind of public room that they frequent. I instruct them to mark the location of doors, windows, furniture, and significant objects such as large potted plants, as well as where other people are located, and then to indicate where they routinely sit or stand.