Humans were considered the epitome of reality, for there was no higher being. In the 1960's, things began to change, and postmodernism entered the picture. Many young people began questioning the fruits of modern civilization - technology, social regimentation, rational planning. Out of this movement came the civil rights movement. Feminism took center stage.
Postmodernism is essentially a rebellion against modernism.
Those with modernist ideology believed that objective truth could be found. Postmodernists reject this assumption. They do not believe that absolute, objective truth exists. Society no longer trusts in truth or reason. Thus, knowledge is no longer assumed to possess inherent goodness.