 Both Rational Reflection and New Rational Reflection have us defer to rationality as we would defer to an expert. But whereas Rational Reflection has us defer to rationality as an expert with exactly our evidence, New Rational Reflection has us defer to rationality as an expert who has our evidence and is certain that it is an expert. Elga argues that this is the right way to defer to experts more generally, making New Rational Reflection (on his view) simply a more carefully-formulated expert deference principle. (See Pettigrew &amp; Titelbaum 2014 for a concurrent view.)