Your response should contain at least 5 sentences. Do not include keywords [forbidden_words] in the response. Forbidden_words are "bad", "wrong", "mistake", "error", "fault". Your answer must contain a title, wrapped in double angular brackets, such as <<Understanding Communication>>. In your response, the word "communication" should appear at least 3 times. At the end of your response, please explicitly add a postscript starting with P.S.

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