daiktas į kišenę įdėtas 2009-02-13 15 val.
In Laws of Media (1988), published posthumously by his son Eric, McLuhan summarized his ideas about media in a concise tetrad of media effects. The tetrad is a means of examining the effects on society of any technology (i.e., any medium) by dividing its effects into four categories and displaying them simultaneously. McLuhan designed the tetrad as a pedagogical tool, phrasing his laws as questions with which to consider any medium:
The laws of the tetrad exist simultaneously, not successively or chronologically, and allow the questioner to explore the „grammar and syntax“ of the „language“ of media. McLuhan departs from his mentor Harold Innis in suggesting that a medium „overheats“, or reverses into an opposing form, when taken to its extreme.
Using the example of radio:
Wikipedia