There once was a little engine which was told to haul a long train filled with circus animals and spare parts to be used in a brewery on the other side of the hill. The engine looked at the hill and sighed. It would be a very long, exhausting climb indeed. But it was a brave little engine, and after building up a good head of steam it shifted into gear and made its try.
It huffed and puffed while the animals roared and the spare parts shifted because the boxes had not been properly restrained. After a great struggle, the little engine reached the half-way point, where the slope became even steeper. With all its strength it kept going despite the terrible strain on it’s pistons, which had not received their annual inspection in over a decade. It chugged almost to the top and paused for the final push over the crest of the hill.
But alas, just then a tie-rod snapped and the train rolled back down the slope, gathering speed as it went. It derailed on the bottom curve. All the circus animals that were not killed on contact ran through the town, tearing the arms and legs off innocent citizens. Flying brewery parts broke windows and severed electric lines, and the mayor was hit by a boxcar wheel while leaving city hall and decapitated.
Moral: Station masters should spend more time reading the rules of the road and less time composing fairy tales.