8.3. Eliminating Holes and Overlaps
Holes exist when a requirement or issue is uncovered. Overlaps exist when requirements or issues are covered more than once, either totally or partially. The point in determining holes and overlaps is to make our processes more efficient by covering all the requirements or issues without unnecessary redundancy. One problem that overlaps will exhibit, if they are allowed to remain in the system, is to provide multiple answers to the same problem. If, in future, a change is necessary, it is possible that only one of the approaches will be changed, thereby leaving different answers to the same issue in the system. That creates, rather than solves, a problem.
Once all the approaches have been identified, they should ...
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