Whenever substantial risk is involved, the best approach to systems design involves a strategy.
—Richard de Neufville, professor of engineering systems, Massachusetts Institute of Technology, from Applied Systems Analysis
One of the most difficult tasks that is least addressed in the systems analysis literature is knowing how to model a system.
—Yacov Haimes, professor of systems and information engineering, University of Virginia, from Risk Modeling, Assessment, and Management
Uncertainties inevitably enter into complex problems from several sources: process variability, lack of knowledge, and human error. To some, “uncertainty” implies an absence of knowledge whereas “variability” ...