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...The incremental commitment spiral model phased view stage ii i definition development operations and production icsm anchor ecr vcr fcr dcr ocr points n life cycle elopment v aluation oundations de o p phases exploratio f activities concurrent risk initial scoping concept system increment opportunity driven architecture growth of investment ops understanding analysis build to foundations plans rebaseline specifications ndi outsource partner selections evaluation evidence feasibility proceed stakeholder review high but acceptable addressable too unaddressable negligible adjust scope priorities or discontinue exploration valuation ocrn reprinted with permission from human integration in process by national academy sciences courtesy academies press washington d c description content provided developer validated independent experts that if is built specified it will h satisfy requirements capability interface level service evolution support operational be buildable within budgets schedules...