I don't necessarily agree with everything that I say.
Marshall Mcluhan
Marshall Mcluhan is notoriously difficult to understand. He loved puns, he enjoyed being a bit cryptic, and some of his stuff frankly doesn't make any sense at all.
It doesn't help that people who have supposedly picked up on his work (writers such as Neil Postman and Nicholas Carr), seem to reduce his arguments to something like "technology is making us stupider". Which... maybe. But I don't think that is what Marshall Mcluhan was saying.
In my own imperfect understanding, Mcluhan's main ideas go something like this:
Technology is not neutral. Media and technology create and shape our whole environment. They change our perceptions and perspectives ('alter our sense ratios', in Mcluhan's words). They change how we see ourselves and how we understand the world. This is where his most famous phrase, "the medium is the message", comes from.
He divided history into three major epochs/ages, according to which media form was dominant. They are: the oral age, the print age, and the electric age.
Print, in particular with the phonetic alphabet, is the technology that has defined Western civilization. Mcluhan argues that our concepts of individuality, privacy, rationalism, and abstraction, all stem from the character and environment created by print technology.
Today the print age, and the world it created, is in collision with the electric age. And so we are seeing the environment and institutions built in the print age being undermined and subverted by the new environment inherent in electric technology. This environment is decentralized, holistic, instantaneous, and totally involving.
Writing long before the internet came around, Mcluhan amazingly predicted and described so much of our world today that we still find so disorienting and confusing.
The quotes and content for this comic come from Mcluhan's most popular book, Understanding Media: The Extensions of Man.
Also check out this video of a Q&A he did for ABC Radio in Australia in 1977.