Before 1985 I used to design systems using one iteration. It was about that time that I started to apply the lessons learned from numerical methods used in digital simulation to control the design process. In particular the solution for a second order differential system involves the optimization of damping factor and frequency. Frequency implies the use of short iterations. Damping factor deals with clear and concise communications delivered without personal entanglements (conflicting personality styles etc.). Weaving together electrical engineering feedback control systems using numerical analysis techniques and controlling the work process of a business system resulted in greater productivity. See the drawing Iteration life cycle

For example, when contrasting the results of six people using the one iteration technique compared to a group of three people using the feedback iterative development technique the outcome was clear. The first group of six was over budget, late and the project did not work. The second group of three using a super high iteration technique finished on budget, on time, and the requestor was elated. The six people that wasted over a year were fired. The group of three using six months was smiled upon and given another challenge. That is I was given every project in gas systems to redesign.

Note: I hired on at Michigan Wisconsin Pipeline because they promised to trade lower pay for no on call, no overtime, and no travel. (My boys just lost their Mom and I was a single parent) With the hostile take over by Costal Corporation we were put on overtime. I resigned. When I left ANR pipeline the director was furious.