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Of course, there are a myriad of addit,ional approaches in addition to those itemized above. When all promising alternatives have been evaluated, it is useful to look at the overall system design and ask the following questions: 1. Have all objectives been attained? 2. What are its strong points? weak points? 3. Where is the time and cod concentrated? 4. Is there a radically different approach that should be examined?
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