In relating to page 256 that Sears might deliberately damage its white appliance goods. Then why do you suppose that many doctors happily take on senior patients who pay less per visit than you I and I might pay? Who might come more often to see the doctor either a senior patient or someone in his or her twenties? After reviewing this example, would you suggest that doctors of our day are not playing "Robin Hood" but are in fact, price discriminating monopolists?