 Plato attacks political democracy by drawing an analogy to the medical arena: “When a man is ill… to the physician he must go, and he who wants to be governed, to him who is able to govern” (Plato Republic, VI 489B–C, 180). Nowadays it is common to reject both Plato’s anti-democratic politics and his medical ethics. A central defense of political democracy against Plato’s attack rests on the  Condorcet jury theorem,  which underwrites the “wisdom of the masses.” But why reject Plato’s medical ethics? In the medical arena there are no masses, and yet the informed consent requirement gives a single non-expert—the patient or the research participant—veto power over some interventions, even against the will of many expert physicians. Why not take Plato’s, or Hippocrates’s, approach in the medical arena? Why require informed consent, disallowing even a mass of medical experts to make the final decision on matters that fall within their fields of expertise—medical treatment and medical investigation? The main arguments for informed consent revolve around: