This was one very curious short subject I happened to catch. It was produced by the Mormon Church and it concerns a man driving through desert country. He runs out of gas and treks through the desert country until reaching a ghost town. There's a pump there but it looks like it's run dry.
But maybe not, there's a letter of instruction telling where to find a jug of water, the pump has to be primed before it will work. But use all of it, don't drink it.
So the question is, drink the water or believe the letter and prime the pump and have a lot of water to drink and whatever else. In the end we see what choice our thirsty traveler makes and the results thereof.
I have to say this was a nice and very clever allegory that the Mormon Church produced. Very nice short subject.