 Expected utility theory has been criticised for not allowing for value interactions between outcomes in different, mutually incompatible states of the world. For instance, recall that when deciding between two risky options you should, according to Savage’s version of the theory, ignore the states of the world where the two options result in the same outcome. That seems very reasonable if we can assume separability between outcomes in different states of the world, i.e., if the contribution that an outcome in one state of the world makes towards the overall value of an option is independent of what other outcomes the option might result in. For then identical outcomes (with equal probabilities) should cancel each other out in a comparison of two options, which would entail that if two options share an outcome in some state of the world, then when comparing the options, it does not matter what that shared outcome is.