"Last night I heard that Wesson oil doesn't soak through food. Well, that's true. It's not dishonest; but the thing I'm talking about is not just a matter of not being dishonest; it's a matter of scientific integrity, which is another level."
to introduce the CVS basics to CVS novices (in 2 minutes) and refresh and improve the knowledge of people who already know CVS. It's a CVS tutorial, a quick start guide but it's told like a story with lots of examples.