 For decades, bioethicists have discussed medical informed consent in relative isolation from consent in political philosophy, contract theory, and sexual ethics, where notions of consent are also pivotal. This is finally changing, and it raises new technical and philosophical questions about how to put these different discourses in dialogue with each other. For instance, is what bioethicists call “presumed consent” the same thing as what political philosophers call “hypothetical consent”? Is what bioethicists call “proxy consent” one with what lawyers call “impersonal consent”? What bioethicists dub “invalid consent” would often be described by contract law experts as “lack of consent” (Beauchamp 2010, 56; Kleinig 2010, 13, 15).