As architects we traffic mostly in diagrams—two dimensional descriptions of characteristics of a building or a built environment that you will not necessarily see but which will shape your experience of it. Diagrams have been with us for millennia and architects have employed them for centuries (plans, sections, elevations) but for most of us they are a relatively newly ubiquitous. Today we are exposed to some kind of diagram almost every day in the media and elsewhere-visual representations of information meant to convey at-a-glance a picture of a set of facts, some kind of reality-- that we don’t necessarily see but which influences how we see or think about the world around us.