 Finally, Lewis’s theory of mental content, like his theory of mind in general, is anti-individualistic. What matters is the functional role that a state typically has in creatures of a certain kind, not what role it has in this creature. So there might be a madman who does not attempt to get what they desire. A pure functionalist may say that such a person has no desires, since desires, by definition, are states that agents attempt to satisfy. Lewis says that as long as this state typically leads to satisfaction-attempts in creatures of this kind, it is a desire. Indeed, if a state typically leads to attempts to get X, it is a desire for X, even if little about the role the state plays in this particular agent would suggest it is a desire for X.