I enjoyed some of this author's work but this struck me as needlessly facetious. Some of the conclusions regarding TV can easily apply to current day technology, but I'm not sure I agree with him as to the consequences. 
Many of his problematizations of the subject can be easily interpreted as ableist, racist, and downright colonialist, but due to the fact that he doesn't elaborate in any of these, he ends up tip-toeing that middle line like a true libertarian. While I understand that his approach was revolutionary in its time and certainly paved the way to an improvement of pedagogical thinking, I believe that many of his conclusions regarding the "function of school" have been overriden by critical theory (Freire, Jelin, etc.) I would encourage anyone with an interest in education to look up more perspectives and not "marry" into Postman's vision so quickly.