Abstract

That the concepts of confirmation and requirement are very similar has recently been suggested by the discovery of four analogies between them. This conjecture is tested by comparing examples of each relation. I show that both of these relations can be "defeated" in two similar ways. But I also argue for two important dissimilarities between them: 1) when faced with certain inconsistencies, requirement suffers much more drastically than confirmation, and 2) confirmation is partiresultant in a sense in which requirement is not.