On a long-distance airliner, there was a doctor and an engineer. Just as the engineer wanted to go to bed, Dr. went to the front of the engineer and suggested a fun game Новости туризма. The game was like this: "Ask a question if the engineer If you do not know the answer, give the doctor $ 500. Then, ask the engineer, and if the doctor does not know the answer, give the engineer $ 500. "

The engineer was very tired, so politely refused the request of Dr., Dr. had to change the gameplay: "If the engineer does not know the answer, as long as the $ 500, if the doctor does not know the answer, give $ 5000!"

When the engineer suddenly raised interest, promised to play this game.

At the beginning of the game, Dr. Q: "What is the distance between the Earth and the Moon?"

The engineer did not want to, took out $ 500 from the pocket to the doctor.

Then, the engineer asks, "What is three legs when I go up the mountain and four legs when I go down Trip to Hong Kong & China?"

The doctor came up with his laptop, consulted his encyclopedia, and then connected to the Library of Congress with an Internet connection provided by an airliner. He then sent an e-mail to his friends and colleagues, but he could not find an answer.

After an hour, the doctor had to wake the engineer, took out $ 5000 to him, the engineer is also very friendly to receive this $ 5000, want to continue to sleep ground transfers in Hong Kong.

Dr. pulled engineer asked: Well, that answer is what?

Engineers do not want to, and took out five hundred dollars from the pocket to Dr., and then continue to sleep.