Write a formal essay answer consisting of three to five paragraphs for each question (introduction, body, conclusion).  The document should be grammatically sound and free of spelling errors.  Please provide answers that are detailed and complete and that are free of technical jargon, so that a novice can understand. 

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Question 1: Describe the place of SMS (Safety Management System) within safety theory

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Question 2: Describe the importance of data sharing for aviation safety

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Question 3: Compare the methods and strategies for quality assurance and safety assurance