Neil Postman in 1985 wrote that Television had changed the public discourse of the USA. Whereas for the past many years the culture of the country was shaped by written literature, ever since the Television came people began to think in terms of meaningless images rather than thinking in terms of propositions and arguments. I remember coming across a famous quote often attributed to Marshall Mcluhan (although I haven’t checked), “We shape our tools and thereafter our tools shape us.”