 If one has to imagine someone else’s pain on the model of one’s own, this is none too easy a thing to do: for I have to imagine pain which I do not feel on the model of pain which I do feel. That is, what I have to do is not simply to make a transition in imagination from one place of pain to another. As, from the pain in the hand to pain in the arm. For I am not to imagine that I feel pain in some region of his body….