This document discusses postmodernism and its implications for geography. It begins by defining characteristics of pre-modern, modern, and postmodern thought. Postmodernism rejects absolute truths and objectivity, instead seeing truth as subjective. It then outlines three major pioneers of postmodernism in social theory. Next, it discusses how postmodernism became influential in geography in the late 1980s, rejecting modernism's theories of absolute truth. The document lists five main themes explored by postmodern geographers and criticisms of postmodernism. It concludes by discussing the importance of geography education for understanding the world in the 21st century.