Metaphor: Leveraging Experience
Many of the chapters in this book (Chapters 8, 9, 10, and 11) focus on design for narrowly de¤ned technical domains such as process control and aviation (i.e., the right side of the continuum illustrated in Figure 6.3 in Chapter 6). In these chapters the emphasis is on making the deep structure of the control problems explicit to the human operators through analog, geometrical form displays. Thus, much of the attention is on work analysis and the use of the abstraction hierarchy as a framework for thinking about domain semantics. In this chapter we want to focus more on the other end of the semiotic dynamic: the awareness side of the equation.