Abstract: A computer method manages risk in multiple-parameter physical systems performing interrelated activities, where at least one of such activities is risk-related in that it may have an outcome level which may fall outside of boundary limits. The method establishes a course of action (strategy) for the physical systems that facilitates preventing any outcome levels for risk-related activities from falling outside of boundary limits. The method assumes the existence of a computational multiscenario decision-making model that describes the physical systems and determines, under some set of criteria, both feasible and desirable levels of their activities. The method may assume either certainty, under which the value of each model parameter is known, or uncertainty, under which the values of one or more of model parameters are unknown.