The people who are sitting in this imaginary theater are a part of the extended metaphor, too. Service doesn't come out and say it, but these audience members are standing in for the people who have lived through this year along with the speaker. We're not sure if they're meant to stand in for the whole world – maybe they're just an interesting sample. Still, there's a way in which they seem less like real people and more like ideas or stock characters (the rich guy, the criminal, the disappointed lover, etc.).