I don't think the words, "cautious optimism," are actually in the song, but that's what the song's about, and stuff.  I'm considering using this music or a better version of it for the closing credits o' the first chapter of the movie I'm working on. I haven't decided yet. See, it's the end of the first part of a trilogy, but the trilogy will be all one big movie. It's like, hey, let's end on a hopeful note, but not too hopeful.