At a convention, I once heard one of the people who worked on one of the many Star Wars RPGs tell a story about how the publishers had put together the vital statistics for Darth Vader’s Executor Star Destroyer, including its length. One fan wrote in to tell them they’d gotten the size of the ship totally wrong and had based their assessment on the size of the nearby moon of Endor, its curvature, and other visual cues from the footage in Return of the Jedi.
Now we have a similar situation with the opening credits to Star Trek Voyager:
This wasn’t my favorite Trek show, but now I can’t even enjoy the opening credit sequence without thinking about this. Such is the life of a nitpicker. 🙂