As its name suggests, postmodernism refers to the historical era that comes after the end of modernism. It started as a late twentieth-century movement and appeared in a variety of fields of study, such as philosophy, psychology, art and architecture, political and social science, literature, economics, religion, and others. Postmodernism is essentially a critical response to modernism—while modernism is about individualism, reason, and objectivism, postmodernism appears as a critique of reason, rationality, and logic, and is all about subjectivism.
Some of the main characteristics of postmodernism include scepticism and relativism, as postmodernists believe that there is no objective, universal truth and law or objective reality—the relative, individual truths and realities of each person are what matter the most. Nothing is certain and everything is relative; science, knowledge, and all existing social norms and standards are not characteristics of civilizational progress, but rather means of control or mechanisms that those in power use to control the masses.