“…Others have written on theoretical aspects of the evolution of designs (Hull, 1988, Steadman, 1979, Stebbins, 1971 and design knowledge (Gero, 1996, Kaplan, 2000. Some related work focuses on evolution in software design (Foote & Opdyke, 1995, Kemerer & Slaughter, 1999, Lieberherr & Xiao, 1993, Taylor, 2000b). Vernacularism appears to be robust and irrepressible.…”