Although our initial simulation showed that we would achieve our goal of 40 units/week, its results were not reflective of reality, where variability impacts much of our process. Had we implemented this process in our organization, we would have expected no problems with productivity; however, in reality, we never would have met our goal due to variability.
After taking variability into account, we saw a significant drop in our throughput. The goal of 40 units/week could not be achieved without making some changes to the process. With the results of the simulation in hand, we could find which changes to make, and then test these changes in Process Simulator without making expensive changes to our actual, real-world process.
Having fixed the deficiencies in the process, we find that we will be able to meet our goal of 40 units/week and can implement the process in our organization with confidence.