 This response to problem of error cases is plausible but there are also considerations against it. One such consideration is that stating these alleged reasons often leads to paradox or infelicitous claims. For many would argue that a claim such as “Ellie’s reason for stepping on your toes is that you are stepping on her toes, although you are not stepping on her toes” is paradoxical. By contrast, there is no air of paradox whatsoever in the corresponding claim about Ellie’s beliefs: “Ellie believes that you’re stepping on her toes although you are not”. Thus, Unger writes: 