If you are reading this today, January 18th, 2012, then you are lucky. These words, saved on a server somewhere, accessible by typing a name into or clicking a link on your web browser, which sends a request to that server for the information over the various interlinked computers that comprise the Internet, are being displayed before you for your perusal, having survived an arduous journey at incredible speeds through various and sundry networks and via any number of different types of wires or conduits. To you, the user, the reader, it is virtually instantaneous, and you are left unaware of the sequence of events that must transpire for this information to reach your eyes.
As Arthur C. Clarke once noted (paraphrasing), any sufficiently advanced technology would appear as magic to us. No doubt, the Internet and all the things that are on it, appear to arrive magically at the window that sits before you now, with just a few mouse clicks or keystrokes or swipes of a finger on glass. Not unlike a car, the mechanics of what transpires do not enter in to our minds when we turn the key on the Internet. It is just there, ubiquitous, waiting for us.
What if it that were not so?