"This is a blank spaceship," Sandora looked at the dim, tilted abandoned corridor and said in a voice almost like talking to herself, "No place of origin, no serial number, not even a military emblem... Who on earth built this thing?"
With Sandora's reminder, I also noticed the oddities in the details of this spaceship: we have been advancing down its outer corridor for over ten minutes, not seeing anything that indicates the place of origin of this spaceship, not even any equipment with model or serial numbers. The lack of place of origin information might be explainable—perhaps this spaceship is a joint production of multiple sky zones, or its place of origin indicator is elsewhere—but not having model information on the equipment embedded in the corridor is quite unusual.
