The health care industry in the mid-1990s could see that new regulations were going to a force changes in the way they ran their organizations. But there were so many proposals they could not predict what form the U.S. health system would take. One large health care organization decided to exploit this variation. They developed tests of all likely scenarios in various parts of their organizations. This not only let them learn how the organization would adapt, but also allowed these tests to be conducted under a wide variety of conditions.