possibly have enjoyed solving them, for he had the kind of playful approach necessary for tackling new and obscure relationships. Radio affects most people intimately, person-to-person, offering a world of unspoken communication between writer-speaker and the listener. That is the immediate aspect of radio A private experience. The subliminal depths of radio are charged with the resonating echoes of tribal horns and antique drums. This is inherent in the very nature of this medium, with its power to turn the psyche and society into a single echo chamber. The resonating dimension of radio is unheeded by the script writers, with few exceptions. The famous Orson Welles broadcast about the invasion from Mars was a simple demonstration of the all-inclusive, completely involving scope of the auditory image of radio. It was Hitler who gave radio the Orson Welles treatment for real. That Hitler came into political existence at all is directly owing to radio and public-address systems. This is not to say that these media relayed his thoughts effectively to the German people. His thoughts were of very little consequence. 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