agenda and timetable based on the grand challenges and priority technology areas for manufacturing in 2020 should be developed. However, detailed research agendas or timetables were beyond the scope of this study. Research road maps that could be used to monitor progress toward realization of the vision of manufacturing in 2020 should be established in follow-up technology seminars with focus groups exploring the priority technologies and potential research areas. Rather than trying to anticipate the advancements for a twenty-year period, the committee recommends that general long-term goals be established in each technology area and that detailed road maps be established for five-year ''windows of commitment." This approach, similar to the approach of the Defense Advanced Research Projects Agency, would provide a reasonable time frame for technology incubation, with yearly reviews to monitor progress. At the end of the five-year period, goals and programs would be re-examined for the next five-year period. This approach would allow research efforts to be adapted to revolutionary advances and for unfruitful research directions to be reconsidered.



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