I'm looking at the very first example, and I'm a little confused. The function `home()` displays a list of messages, but they aren't passed into `home()`. Instead, `messages` is basically a global variable, and some other functions can append messages to it. Then I went looking at some more examples, and I see this pattern repeated. Is this how you're supposed to build webapps with this package? How does it isolate the list of messages for different users?