Inspired by the values of Classical and Enlightenment culture, Postman was something of an old-fashioned humanist, who in the face of extraordinary technological change in contemporary society held firmly to his beliefs that there is a limit to the promise of new technology, and that it cannot be a substitute for human values.
Postman was born and spent most of his life in New York City. In 1953, he graduated from State University of New York at Fredonia. He received a master's degree in 1955 and a doctorate in education in 1958, both from the Teachers College, Columbia, and started teaching at NYU in 1959.
In 1971, he founded the program in media ecology at the Steinhardt School of Education of NYU, attracting a large audience for his lectures and writings over the years. In 1993 he was appointed a University Professor, the only one in the School of Education, and was chairman of the department of culture and communication until last year.
Postman wrote 17 books and more than 200 magazine and newspaper articles for such periodicals as The New York Times Magazine, The Atlantic Monthly, Harper's, Time Magazine, The Saturday Review, The Harvard Education Review, The Washington Post, Los Angeles Times, Stern, and Le Monde. He was also on the editorial board of The Nation.
Perhaps his best known title is Amusing Ourselves to Death (1985), in which he criticized the television industry for confounding serious issues with entertainment. He took offense at the presentation of television news with all the trappings of entertainment programming, including theme music and "talking hairdos." Only in the printed word, he felt, could complicated truths be rationally conveyed. The book was translated into eight languages and sold some 200,000 copies worldwide.
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I don't think any of us can do much about the rapid growth of new technology. However, it is possible for us to learn how to control our own uses of technology. The "forum" that I think is best suited for this is our educational system. If students get a sound education in the history, social effects and psychological biases of technology, they may grow to be adults who use technology rather than be used by it. 
Anyone who has studied the history of technology knows that technological change is always a Faustian bargain: Technology giveth and technology taketh away, and not always in equal measure. A new technology sometimes creates more than it destroys. Sometimes, it destroys more than it creates. But it is never one-sided.
The invention of the printing press is an excellent example. Printing fostered the modern idea of individuality but it destroyed the medieval sense of community and social integration. Printing created prose but made poetry into an exotic and elitist form of expression. Printing made modern science possible but transformed religious sensibility into an exercise in superstition. Printing assisted in the growth of the nation-state but, in so doing, made patriotism into a sordid if not a murderous emotion.
Another way of saying this is that a new technology tends to favor some groups of people and harms other groups. School teachers, for example, will, in the long run, probably be made obsolete by television, as blacksmiths were made obsolete by the automobile, as balladeers were made obsolete by the printing press. Technological change, in other words, always results in winners and losers.