Anybody who believes this is being foolish. Packages don't just "fall off" of boxcars. Those cars aren't open topped, the cardboard packages would be ruined by the weather if they were. The only way for a package to fall off a train is if somebody deliberately breaks into the train cars with those packages, and probably starts throwing the packages off the train.

The fact that they couldn't charge most people with that only highlights the inadequacy of their enforcement.