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8-1 Message: Write a function called display_message (), which prints a sentence indicating what you learned in this chapter. Call this function to confirm that the displayed message is correct. ?抬眼问几位夫子：几位前辈到场的时候，是不是也以为葫芦已经不中用了？黄夫子等人重重点头。Let's understand such a problem first, If our front-end development needs are the needs given to us by the demand side, It is possible that a front-end developer will deal with multiple demanders, Therefore, it will keep in touch with multiple demand parties. Then in the program it means keeping references to multiple objects, The larger the program, There will be more and more objects, The relationship between them will become more and more complicated. Now if there is an intermediary (if it is our supervisor) to meet the needs of multiple demanders, Then the demander only needs to give all the requirements to our supervisor, who will assign tasks to us according to our workload in turn. In this way, our front-end development does not need to contact with multiple business parties, we only need to contact our supervisor (i.e. Intermediary), which weakens the coupling between objects.Raiders.Come late, I have work to do