Sometimes I use the story of Jacob's dream in his lectures. When I am asked whether I believe in UFOs, then, in response, I cite the following example. Suppose I say to people gathered in a hall that front door is now smack raspahnetsya and here, out of breath from running fast, fly nervous young man, and not paying attention to what is happening, shout abuse: "You will not believe it - this happened to me!" Then he will tell you how to walk off to another city to find a bride. Getting dark, and he felt tired, found a stone that started it and put the backpack under his head, fell asleep. Among the night of his wake noise and bright light. Sleepy and Glare of the young people saw a UFO! The ladder went up to the object hovering in the air, and some substance to it scurry up and down. Against the backdrop of illuminated hatch was visible silhouette of - perhaps, their commander. 
The spectacle was so incredible that a young man lost his senses. When he regained consciousness, everything disappeared - and the UFO, and the commander, and a staircase with snuyuschimi for her creatures. As if this was a dream. However, burst into the room the young man insisted that all happened dreams that he had seen this picture already, after finally woke up and that the commander of the UFO had made to it! 
So - I asked the audience - whether we believe in the story boys? Not if he plays here? Or is it a dream? Or maybe he actually collided with a UFO and its crew? 
It is still not recovered from the shock the young man finished his story that he was not sure whether these events real, or just dreamed it. What do we think? Do we believe him?