Hello, I hope it is okay to post my question here. I am a writer and am currently researching the song, Midnight Special. In this 1920s song, the midnight train passes the Sugar Land penitentiary giving the prisoners inside a glimpse of freedom. One popular interpretation of the story is that the prisoners believed that if the train's headlight shone on them they would be the next to leave on parole -- that was their superstition anyway. But I am curious as to the logistics of this. If a train is traveling the same way, on the same track, at the same time, wouldn't its headlights shine onto the prison in the same way each night? Why would the beam illuminate one prisoner's cell one night, but not the next? Perhaps I am not supposed to think about this too hard.... or perhaps I am missing something ... which is why I am here! Thanks in advance for any responses!