人类从口耳相传的语言媒介阶段 ,到书写于布帛、竹简 ,印刷于纸张的文字媒介阶段 ,再发展到近现代的电子声像传媒 ,纵观人类使用媒介的历史 ,其实就是一部人类文明的发展史。媒介的本质就是工具 ,无限扩张着人自身的能力。加拿大传播学者马歇尔·麦克卢汉认为 ,媒介是人体的延 Human beings from the verbal transmission of verbal media stage, to writing in the fabric, bamboo slips, printed in the paper at the stage of writing media, and then developed into modern electronic audio-visual media, through the history of human use of media, in fact, is a human civilization The history of development. The essence of media is the tool, unlimited expansion of people’s own ability. Canadian communication scholar Marshall McLuhan believes that the media is the extension of the human body