The scientific rationalism of the Enlightenment presupposed a foundation of objective truth. Postmodernists have cast out the category of truth altogether. Characteristics of Postmodernism Meaning, morality, and truth have no objective existence.
Principles are preferences.
Individuals are wholly shaped by cultural forces. Every culture constructs its own reality. Denial of the transcendent. There are no absolutes. All human institutions and relationships are reduced to expressions and masks of the primal will to power.