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    Dan was the doorman of a club in a big city. Every day, thousands of people passed his door, and a lot of them stopped and asked him, “What's the time, please？”

    After a few months, Dan said to himself, “I'm not going to answer all those stupid people any more. I'm going to buy a big clock and put it on the wall here.” Then he did so.

    “Now people aren't going to stop and ask me the time.” He thought happily.

    But after that, a lot of people stopped, looked at the clock and asked Dan, “Is that clock right?”