Radio provided the first massive experience of electronic implosion, that reversal of the entire direction and meaning of literate Western civilization. For tribal peoples, for those whose entire social existence is an extension of family life, radio will continue to be a violent experience. Highly literate societies, that have long subordinated family life to individualist stress in business and politics, have managed to absorb and to neutralize the radio implosion without revolution. Not so, those communities that have had only brief or superficial experience of literacy. For them, radio is utterly explosive. To understand such effects, it is necessary to see literacy as typographic technology, applied not only to the rationalizing of the entire procedures of production and marketing, but to law and education and city planning, as well. The principles of continuity, uniformity, and repeatability derived from print