I was a huge McLuhan fan when he was all the rage in the early 70's. True, there was much bullshit pontificating on his themes, as college students and professors are wont to do, but there was a lot of substance to his work too. He even made a cameo in Woody Allen's 'Annie Hall' telling a pompous ass who was discussing McLuhan's theories that he "knew nothing of my work." He kind of dropped out of favor a little later on, as academic fads often do. He had somewhat of a rebirth when the internet got really rolling in the late 90's, as so much of what he was originally writing about was suddenly unfolding in front of our eyes. 

So many people stake out a belief and then only seek out the biased informational sources that support that belief. The internet and social media is perfect for that approach too. What should be a vehicle to open up to other people's perspective seems to instead have become a place where we can wrap ourselves up in cozy virtual cocoons with like minded folk. We now have a boutique media where we can pick and choose the news that fits our on individual political bias. Be one left, right, center, or fringe, there is a plethora of sources on the web that will support you beliefs, and deliver you right to the door of targeted advertisers.....