In screenwriting, the theme is ultimately the author's way of how one should (or should not) live in this world. It's no different here. You don't have to make it obvious but it should be there.
Q: How do you balance control and randomness in your work?
A: I really enjoy the unexpected curiosities that can emerge through randomness. When building a new project, I start with control over the guaranteed framework to create a foundation that I know works properly.