Derrick de Kerckhove is one of the most prominent media critics of our time. Residing in the same small brick cottage from which Marshall McLuhan held forth, de Kerckhove observes civilization under the influence of technology. In Planetary Mind he retells human history by exploring how "our tools" embody our shifting notions of personal identity and humanity. Language, he says, is a tool. The alphabet is a tool. Our body is a tool. Money is a tool. Television is a tool. A computer is a tool. De Kerckhove's premise is that soon a global network will provide all of humanity with an unfathomable new tool: a planetary mind, a collective intelligence, a buzzing, worldwide brain.Based on de Kerckhove's Canadian bestseller, The Skin of Culture, this book has been significantly augmented and updated by the author, with new material focusing on the networked era.