But what about "the medium is the message"? I haven't read the book, but I'm remembering a quote mentioning how the technological mediums become extensions of our nervous systems, through this optic, internet and devices maybe really do have this kind of potency...

people don't often understand the integration I have with my devices, and the digital world in general. they are part of me in a very real sense. I learned to operate a computer much the same as someone would learn to move their arm. it is almost something greater than just second nature to me. it feels very similar to how a skilled operator can see heavy machinery as an extension of their body.