Now, what's up with the std:: part that we've used so often?

Well, std points to the standard library, which contains tons of useful things like cout. There's a way around repeating it that much, though.

Nice! This using directive tells the compiler that we want to use what's in std. Then, when it spots cout in the program, it'll look in the std namespace.

Psst: namespaces are special areas that allow us to find and access things. We'll talk about them a little later.

Might it be that we have to include std, the namespace, in order to use cout in the main() function?