In postmodern society, the arrival of the knowledge economy and service industries means that only those groups that have great flexibility will have the best chances for survival and development in a difficult world of global competition and the disintegrating nuclear family.
後現代社會，知識經濟與服務業時代的來臨，唯有高度變異、維持最大彈性的族群，才能在全球化產業競爭、核心家庭結構又已日益解體的嚴苛考驗中，提升生存與發展的可能性。