Even if the use of abduction in Boyd’s argument might have led to the conclusion that abduction is not reliable, one may still have worries about the argument’s being rule-circular. For suppose that some scientific community relied not on abduction but on a rule that we may dub “Inference to the Worst Explanation” (IWE), a rule that sanctions inferring to the worst explanation of the available data. We may safely assume that the use of this rule mostly would lead to the adoption of very unsucces