 The most common rationales for nihilism these days do not appeal to supernaturalism, or at least not explicitly. One cluster of ideas appeals to what meta-ethicists call “error theory,” the view that evaluative claims (in this case about meaning in life, or about morality qua necessary for meaning) characteristically posit objectively real or universally justified values, but that such values do not exist. According to one version, value judgments often analytically include a claim to objectivity but there is no reason to think that objective values exist, as they “would be entities or qualities or relations of a very strange sort, utterly different from anything else in the universe” (Mackie 1977/1990, 38). According to a second version, life would be meaningless if there were no set of moral standards that could be fully justified to all rational enquirers, but it so happens that such standards cannot exist for persons who can always reasonably question a given claim (Murphy 1982, 12–17). According to a third, we hold certain beliefs about the objectivity and universality of morality and related values such as meaning because they were evolutionarily advantageous to our ancestors, not because they are true. Humans have been “deceived by their genes into thinking that there is a distinterested, objective morality binding upon them, which all should obey” (Ruse and Wilson 1986, 179; cf. Street 2015). One must draw on the intricate work in meta-ethics that has been underway for the past several decades in order to appraise these arguments.