It's fascinating to think about how human-devised devices can work as extensions of our brains. Our brain registers and interprets sound, which we receive through our sense organs, the ears. So the brain becomes extended through the ear. The ear itself can be extended when we listen to a phone call. The phone extends our ear to the person at the other end, perhaps miles away. All our senses can be extended as Norman Doidge explains Marshall McLuhan's insight to us:
" . . .the communications media both extend our range and implode into us. His [McLuhan's] first law of media is that all the media are extensions of aspects of man. Writing extends memory, when we use a paper and pen to record our thoughts; the car extends the foot, clothing the skin. Electronic media are extensions of our nervous systems: the telegraph, radio, and telephone extend the range of the human ear, the television camera extends the eye and sight, the computer extends the processing capacities of our central nervous system. He argued that the process of extending our nervous system also alters it."
The Brain that Changes Itself, Norman Doidge, MD, Penguin Books, copyright 2007.
