Key Research Findings:
When Rework Is Desirable
Sometimes more rework makes a project faster!
Moving an activity upstream in a process, in defiance of its predecessors (artificial overlapping)...
Increases the risk of rework (adds feedback marks in the DSM)
But, can let workers “get their feet wet,” which may be worth the time savings in cases of:
Substantial set-up times
Significant improvement (learning) curves (IC)
Low sensitivity to input changes (low rework impact)
Low second-order rework generation
No resource constraints
Tradeoff: time (duration on the critical path) for cost
Situations must be evaluated at the project level in terms of the overall network.
Key Publication: P8