A well-known model of the design process consists of five steps, which are explained below. Traditionally, these steps have been thought to occur in a linear manner, beginning with defining the problem and progressing towards realizing the solution. But rarely, if ever, is the process so smooth and predictible. Design formulas certainly can be devised and followed letter by letter, ending in solutions lacking imagination and mental rigor. But perhaps it is more helpful to think of the process as five fields of activity that overlap each other in a multidimensional environment of intellectual discourse. The process is not linear; rather, it is one of interaction and ambiguity where paths appear to meander aimlessly towards durable and innovative solutions.