 Even if most research participants had sufficient understanding to provide valid consent, it would not follow that there should be no limitations on research with competent adults. The conditions on what one individual may do to another are not exhausted by what the second individual consents to. Perhaps some individuals may choose for themselves to be treated with a lack of respect, even tortured. It does not follow that it is acceptable for me or you to treat them accordingly. As independent moral agents we need sufficient reason to believe that our actions, especially the ways in which we treat others, are appropriate, and this evaluation concerns, in typical cases, more than just the fact that the affected individuals consented to them.