Most intelligent people of the eighties had developed a type of radio deafness which enabled them not to hear a human voice coming from a loud-speake… - Fredric Brown

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Most intelligent people of the eighties had developed a type of radio deafness which enabled them not to hear a human voice coming from a loud-speaker, although they could hear and enjoy the then infrequent intervals of music between announcements. In an age when advertising competition was so keen that there was scarcely a bare wall or an unbillboarded lot within miles of a population center, discriminating people could retain normal outlooks on life only by carefully cultivated partial blindness and partial deafness which enabled them to ignore the bulk of that concerted assault upon their senses.