 In decisions under uncertainty, nothing more is given—in particular, the agent does not assign subjective probabilities to the states of the world. Still, sometimes rationality dictates a unique decision nonetheless. Consider, for example, a case that will be particularly relevant here. Suppose that you have two possible actions, \(A_1\) and \(A_2\), and the worst outcome associated with \(A_1\) is at least as good as the best outcome associated with \(A_2\); suppose also that in at least one state of the world, \(A_1\)’s outcome is strictly better than \(A_2\)’s. Let's say in that case that \(A_1\) superdominates \(A_2\). Then rationality seems to require you to perform  \(A_1\).[1]