" Unlike the other four, this last principle cannot be accepted by postmodern Social Justice thought. Theory insists that it isn’t acceptable to criticize some ideas. It also holds that whether a person is right or wrong cannot be established by evaluating the soundness of her ideas, but is dependent on her identity (“positionality”) and willingness to employ the right discourses. The “checking of each by each” is effectively impossible in Theory, as people from different identity groups can never fully understand each other. This is the essence of the postmodern knowledge principle. It is clear that postmodernism contains a rejection of liberalism at its very core. If we reject the liberal approach to generating knowledge, we are only left with illiberal alternatives, and, as these gain in moral status and their underlying assumptions are increasingly adopted, they become ever more fundamentalist. This is the essence of the postmodern political principle. "

― Helen Pluckrose , Cynical Theories: How Activist Scholarship Made Everything about Race, Gender, and Identity—and Why This Harms Everybody