 The sources project is, as noted above, often presented as a possible means of justifying skepticism regarding some class of philosophical intuitions. An analogy suggested by Knobe and Nichols (2008) is to debunking explanations of religious beliefs. Theorists engaged in such projects argue that religious belief (or religious experience on which such belief is based) is produced by some questionable process such as wish fulfillment, desire for a father figure, cultural indoctrination, etc. It is then argued (or assumed) that this fact about the source of the belief (or its direct internal ground) undermines the epistemic credentials of such beliefs.