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3. Which steps are always essential? Which may be skipped according to the situation?
4. Why are the steps in the order they are?
5. Which steps are key recursion points (cause you to go back and redo steps)? (You can think of these
as quality checkpoints.)
6. What are some simple situations that could be used to test this methodology?
7. Why does the skipping of steps when working on easier problems lead to problems later, when
working on more difficult problems?
4.1 The Problem Solving Methodology