Postmodernist ideas in philosophy and the analysis of culture and society expanded the importance of critical theory and has been the point of departure for works of literature , architecture , and design , as well as being visible in marketing\/business and the interpretation of history , law and culture , starting in the late 20th century .
Postmodernist ideas can be seen in philosophy , the study of culture and society , literature , architecture , design , as well as in history and law .