“Functional definition” in sociology of religion as a logical fallacyIn sociological approach to religion there are commonly distinguished two sorts of definition: substantial and functional. In the article the author tries to prove a statement that a so-called “functional definition,” especially connected with Weberian perspective, essentially is not a definition, so the traditional classification is unjustifiable.The author introduces three criteria of correct definition in science: formal — definition must specify its object; epistemic — must be communicative; and investigative — must be useful to research. As it turns out, a “functional definition” collapses at the first stage, becau...