2.1 - What is the Internet?

We use the Internet every day.
You are using it right now to read this.
But what is the Internet?

Connecting two computers to send information back and forth is simple enough. It's like using two cans on a string. A message from A is sent to B and vice versa.

The telephone system and our streets and highways are a series of connected routes from point A to B. The Internet is not much different than a set of phones or home addresses with the ability to reach whichever phone or home we want.