Once upon a time, there was a wolf howling in the village everyday at night. His howl was so loud and all the people in the village can’t sleep. One day, when he was howling, his voice suddenly became low, he felt sad. The next day, the wolf went to the doctor, and he told him that there is a problem with his voice. The doctor said: “We must know what is causing this problem, so you should go to the store and bring a machine that checks the voice problem then come back to me to fix it”. The wolf went to the nearest store, he brought that machine to checks his problem, then he went to the cashier.
The cashier said: “This item costs $100”. The wolf said: “I have only $40”. The cashier said: “Sorry you can’t buy this item with $40, you must buy it with $100”. Then, the wolf saw the parts of the machine that are not connected for $40 only, so he brought it. The wolf paid for the machine, then he went back home, put the parts together and checked the problem. The problem was that he howls every night with a loud voice, so he went to the doctor again. The doctor said: “Did you go to the store and buy a machine that checks your problem and checked your problem as I told you before?”. The wolf said: “Yes I did, and the problem is that I howl every night with a very loud voice”.
The doctor opened his neck and he fixed the problem, then he closed his neck, and he told the wolf that he shouldn’t howl every night so the problem doesn’t happen again. The wolf howled happily ever.