If you were now to revisit Chapter 3, Static Structure: Process Description, you would notice its strong relationship to the concepts introduced in this chapter. That is no accident . The modeling of the Rational Unified Process is based on the same techniques: it is a model of the business of developing software. [3]
[3] See Ivar Jacobson and Sten Jacobson, "Reengineering Your Software Engineering Process," Object Magazine , March “April 1995, as Chapter 9 in The Object Advantage, op. cit.