  According to this theory, for Janet to desire to have a yellow mango is just for her to be disposed to go to the fridge, or the store, or to ask her friend, or to do whatever else she believes likely to get her a yellow mango. She need not actually do any of these things, for she might desire to do something else even more, or might be asleep, or drugged, or otherwise prevented from doing the things she is disposed to do, but she must be (at least to some extent) disposed to do them all else being equal. Likewise, for John to desire that Janet love him is for John to be disposed to take whatever actions he believes are likely to make it the case that Janet loves him. And so on, for the various desires that people and other organisms are capable of having. Michael Smith has very clearly articulated this sort of theory of desire in a number of works (Smith 1987; 1994).