Herbert Marshall McLuhan was a Canadian philosopher. His work is one of the cornerstones of the study of media theory. He began his teaching career as a professor of English at several universities in the U.S. and Canada before moving to the University of Toronto in 1946, where he remained for the rest of his life. McLuhan coined the expression "the medium is the message," the term global village and predicted the World Wide Web almost 30 years before it was invented. He was an influential fixture in media discourse.
These laws of media, which McLuhan calls "the tetrad," can help one to understand and, perhaps, respond constructively to the new medium.... Some of the implications seem prophetic.--Euchner, Jim "Research-Technology Management (Journal)"