Iteration
is the real key to engineering problem solving. Rarely
are problems solved in one cycle. The matrix is a tool
you use again and again as you move through a project.
The first round of problem solving is used to find a
problem within an area of concern, while the second
round narrows the focus of inquiry. Progressively tighter
definitions of the problem bring new specifications,
new alternative solutions, new rounds of research and
new matrix analyses.