 When comprehension remains poor despite repeated efforts to elicit comprehension, what should investigators do? Is enlistment in a trial illegitimate, because no autonomous authorization took place (Faden and Beauchamp 1986; Candilis and Lidz 2010)? Some philosophers respond that it remains legitimate, because by giving candidates the opportunity to issue autonomous authorization, investigators do their parts (Sreenivasan 2003), avoid any potential fraud (Millum and Bromwich 2013), and treat the candidates fairly (Miller and Wertheimer 2010), conditions that they find sufficient for valid consent. Indeed, even the permissibility of skipping disclosure when the patient is a medical expert might be taken to indicate that part of the point of informed consent is to prevent fraud, which is impossible when the patient is easily capable of detecting fraud, and not necessarily autonomous authorization.