Your response should contain at least 200 words. Provide a detailed explanation of the concept of [concept] in [field_of_study], including its significance and applications. Highlight at least two sections in your answer with markdown, i.e., *highlighted section*. In your response, the word [concept] should appear at least 5 times. At the end of your response, please explicitly add a postscript starting with P.S. P.S. I hope this explanation helps you understand the concept better.

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