 Even assuming the appropriate kind of connection between credences and evaluations of options, it may be objected still that the sort of inconsistency revealed through the Dutch Book vulnerability involved in violating the probability axioms is not necessarily irrational, particularly in cases where this is due to the failure to grasp some subtle or complex logical or other necessary truths. It is hard to see that rationality requires agents to attempt to remove such inconsistencies in their belief systems; indeed for most it would be both hopeless and counterproductive. Nor does it seem correct to count as more rational the person who avoids inconsistency, by refusing to have an opinion in the face of evidence, than the person with less than full confidence in a logical truth, who takes the incomplete evidence into account. One option is to insist that coherence is a requirement on ideal agents. It might be suggested instead that coherence is one of a number of ideals, whose satisfaction may sometimes conflict, and that an incoherent agent may still be rational in the sense that they have optimally managed their opinions in light of the totality of their goals and constraints. Whatever the conclusion about the irrationality of being incoherent though, with idealizing assumptions about the connection between degrees of belief and the evaluation of options, the DBA succeeds in establishing incoherence as an evaluative defect.  