Kataan seems like a pre-industrial society until the end of the episode, when all of a sudden they're launching a rocket. What's up with that?

The door controls in Ressik are sci-fi beepy dealies, as if the director realized at the last minute they needed something to visually indicate this is a space-age civilization. Because... look at everything else!

Is the anachronistic depiction of Ressik just an artistic choice, or is there some deeper meaning behind it?