  Stalnaker (1981, 2008) argues that Lewis’s view entails an implausible incommunicability of belief. Suppose that Mary believes that she is hungry and utters ‘I am hungry’. On Lewis’s view, she believes the property of being hungry. Suppose Bill hears her and agrees with her. He cannot agree with her by believing what she believes, for if he did, he would believe the property of being hungry, and so ascribe that property to himself, not to Mary. The best that Bill can do is self-ascribe a property that relates himself uniquely to her, such as the property of speaking uniquely to a person who is hungry.