Architects have historically had great respect for and a very deep attachment to the process of drawing by hand, re ected in the many skeptical and concerned responses to o ce computerization o ered by architects and educators such as Michael Graves (2012) and David Scheer (2014). In spite of these concerns, digital document production in the form of 2D CAD or 3D BIM has almost completely displaced hand-drawn documents, transforming the image of architecture and many processes of construction in the last two decades. The reason for this can be seen, in part, in the graphic shown in Figure 10.1, which is often attributed to HOK’s chairman and CEO Patrick MacLeamy, though a similar graphic can be found in several mid-1970s texts, including William Mitchell’s 1977 Computer Aided Architectural Design (Davis 2013).