The next challenge is to track the programmer’s focus of attention as he modifies the design.
	Each new focus set should let the programmer see the results of the last change.  These places are likely spots for where the next refactoring will occur.
	To derive a good focus set, Dr. Jones will have to reason about  where the programmer’s next design moves might take place.
	One way is fpr Dr. Jones to recognize or be told that a multi-step refactoring is taking place (I.e., applying a design pattern like the Observer pattern).