 Finally, decision theory should be of great interest to philosophers of mind and psychology, and others who are interested in how people can understand the behaviour and intentions of others; and, more generally, how we can interpret what goes on in other people’s minds. Decision theorists typically assume that a person’s behaviour can be fully explained in terms of her beliefs and desires. But perhaps more interestingly, some of the most important results of decision theory—the various representation theorems, some of which have discussed here—suggest that if a person satisfies certain rationality requirements, then we can read her beliefs and desires, and how strong these beliefs and desires are, from her choice dispositions (or preferences). How much these theorems really tell us is a matter of debate, as discussed above. But on an optimistic reading of these results, they assure us that we can meaningfully talk about what goes on in other people’s minds without much evidence beyond information about their dispositions to choose.