The document discusses how technological changes, especially the rise of social networking and Web 2.0, pose challenges to traditional education systems and institutions. While technology has advanced rapidly, social systems and institutions have been slower to change. This has led schools to become increasingly irrelevant to how young people communicate and share knowledge today. Personal learning environments have the potential to support lifelong learning in a way that is more flexible than traditional school models and helps facilitate learning across different contexts using various tools. However, PLEs will also challenge existing education systems and institutions.