Pluralistic ignorance
In social psychology, pluralistic ignorance is a situation in which a majority of group members privately reject a norm, but go along with it because they incorrectly assume that most others accept it. This is also described as "no one believes, but everyone thinks that everyone believes". In short, pluralistic ignorance is a bias about a social group, held by the members of that social group.
J. Baird Callicott
Additionally, Callicott has been criticized for espousing an overbearing and impolitic monism in environmental ethics. He does not reject pluralism in environmental ethics outright; he only rejects theoretical pluralism, not interpersonal pluralism or normative pluralism. Callicott claims that philosophers and laypersons should not adopt one theory, say utilitarianism, for one purpose or in one context and another theory, say Kantian deontology, for another purpose or in another context (this would be theoretical pluralism). Such theories are mutually contradictory, and he believes that one's moral life should be coherent and self-consistent; however, he also believes that each person should be free to adopt the theory that to them is the most intellectually compelling (interpersonal pluralism). The general theory that Callicott espouses, Humean communitarianism, correlates ethics to community membership. And because each moral agent is subject to as many ethics as his or her community memberships, therefore each person is subject to a plurality of duties and obligations (normative pluralism). In sum, Callicott is a theoretical monist and an interpersonal and normative pluralist.