 Logic dictates that there are no literal nonfictional pantomaths, but the word pantomath seems to have been used to imply a polymath in a superlative sense, a "ne plus ultra" ("nothing more beyond") as it were, one who satisfies requirements even stricter than those to be applied to the polymath.In theory, a pantomath is not to be confused with a polymath in its less strict sense, much less with the related but very different terms philomath and know-it-all.A pantomath ("pantomathēs", παντομαθής, meaning "having learnt all", from the Greek roots παντ- "all", "every" and the root μαθ-, meaning "learning", "understanding") is a person whose astonishingly wide interests and knowledge span the entire range of the arts and sciences.