[igouy]

> a strawman

"Figure 7. Step 3: Attempt to do the job twice - the first result provides an early simulation of the final product."

1970 "Managing the Development of Large Software Systems"

"Figure 3 portrays the iterative relationship between successive development phases for this scheme. The ordering of steps is based on the following concept: that as each step progresses and the design is further detailed, there is an iteration with the preceding and succeeding steps but rarely with the more remote steps in the sequence. The virtue of all of this is that as the design proceeds the change process is scoped down to manageable limits. At any point in the design process after the requirements analysis is completed there exists a firm and closeup moving baseline to which to return in the event of unforeseen design difficulties. What we have is an effective fallback position that tends to maximize the extent of early work that is salvageable."

http://www-scf.usc.edu/~csci201/lectures/Lecture11/royce1970...