Abstract

Here is a challenge to IBE's epistemic credentials. If a reason is an epistemic reason for a subject to believe a proposition, then that reason increases the likelihood of the proposition's truth. But IBE relies on considerations like simplicity which do not increase the likelihood that hypotheses are truth. So, the reasons given by inference to the best explanation are not epistemic reasons. I contend that this argument fails, but not because, e.g., simplicity is truth-conducive. Rather, I show that the argument relies on a version of epistemic value monism, which even the argument's proponents should reject.