OK, and now for a puzzle with more practical, real-world application. A man is on an island with a bale of hay, a goat and a pet wolf. (Don't ask, just go along with it.) He has a small boat only large enough for himself and one other passenger or item. Meaning he can only take either the bale or the goat or the wolf with him at one time. He needs to get to the mainland with all 3. However, if he takes the hay, the wolf will eat the goat. If he takes the wolf, then the goat will eat the hay. He must be present to ensure that neither of these things happen. There is no one to prevent these events from occurring on the mainland, nor is there any way to either tie or shelter either of the animals, or protect the hay from getting eaten if he were to leave it alone with the goat. How, then, does he manage to get himself, his two animals and his hay across the water to the mainland without the wolf eating the goat, or the goat eating the hay while he is on the other side or in transit? P.S. If you don't know the correct answer, then you should stop trading and send me your money. If you DO know the correct answer, then you may continue trading, but you should still send me your money.
That is easy, you bang the wolf ffrom behind and get her real tired. Then when she passes out you screw the goat as well. While they are recovering from their intense lovemaking you move them on the boat one at a time...