 Smithies (2019; see especially ch. 10) gives an extended defense of a steadfast view. He argues that ideal rationality requires rational omniscience—that is, omniscience both about what the rational requirements are and which requirements apply to one at all times. This means that misleading higher-order evidence is, in an important sense, impossible to come by. While non-ideal agents like Aisha may be mistaken about what evidence they have or what it supports, these mistakes are themselves departures from ideal rationality. (Smithies also supplements this with a view about non-ideal rationality, which is discussed below.)