State consciousness of mind?

What we understand McLuhan is that the different media is an extension of our senses, in that way increasing its effectiveness in order to transmit information: our society was constantly changing and passed from oral to literal media, and the last transition occurred from electric to electronic media. This process not only improved our capacity of getting information, but also our capacity of reception, the information is capable to flight so fast right before our eyes, that sometimes we do not see it and we just do not want to see it.