Abstract

This chapter focuses on one of the common fallacies in Western philosophy: the moralistic fallacy. The moralistic fallacy occurs when one concludes that something is a particular way because it should or ought to be that way. Alternatively, this fallacy occurs when one concludes that something cannot be a particular way because it should not or ought not be that way. The moralistic fallacy is often described as the reverse of the is/ought fallacy, wherein one reasons fallaciously that because things are a particular way, they ought to be that way. Variations of the moralistic fallacy occur whenever any normative claim is used to justify a factual claim about the world, and so the pattern of fallacious reason central to the moralistic fallacy can also be found in legal reasoning, prudential reasoning, or reasoning regarding proper etiquette, aesthetics, humor, or appropriate emotional responses.