We are all capable of arriving at views that are driven by corrupting non-epistemic interests. But we are nonetheless very skilled at performing a commitment to epistemic goods in such cases. I call this the ‘Problem of Mere Epistemic Performance’, and it generates a need to determine when these commitments are illusory and when they are in fact genuine. I argue that changing one’s mind, when done in response to the evidence and at a likely cost to oneself, are the (...) best indications that an agent is committed to epistemic goods, that they are genuinely in the game of giving and asking for reasons. This is because changing one’s mind in this way goes as far as we can in eliminating the possibility that the agent has an ulterior motivation for their epistemic practices. Moreover, this account shows that the consensus view of the ideal epistemic agent is mistaken. The ideal agent must have false beliefs or deficient epistemic practices because only then do they have the opportunity to change their mind and establish a commitment to epistemic goods – a commitment that even an agent with only true beliefs and maximal justification or understanding may lack. (shrink)