There is also the fact that we know about trains, but not as much about other things. If we knew about other aspects, we might realize that there were mistakes there as well.
Anachronistic differences always bother me. One of my favorites is Foyle's war, but every time I watch, I see a few more Easter eggs, like the radial tire in the background when Sam is working in the motor pool, or the modern hand grips on the bicycles.
I always worried that movies and TV shows would teach would be crooks how to commit crimes. Then I saw them commit a crime using technology that I am familiar with. The technology/crime looked good to the great unwashed masses, but I could tell that it could not possibly work that way in real life, so I was no longer worried about it.
So the bottom line is, whatever looks good to the director, even if the director does not have any knowledge whatsoever of the accurate particulars, gets on film.
