Read the following introductory paragraph: Orville Wright, co-inventor of the airplane, was still alive the year Neil Armstrong, who would become the first man on the moon, signed up for flight training. This anecdote is more than a bit of mildly interesting trivia, it's proof that "life comes at you fast." The person who creates an idea or a technology cannot know how it will develop in a few years, much less a few centuries. The man who took the first flight did not imagine rockets, and the men who wrote the Second Amendment could not foresee the wide availability of automatic weapons. Times change, and it makes no sense to insist on applying the concept of Original Intent to constitutional issues. What is the main function of the sentence "The man who took the first flight did not imagine rockets, and the men who wrote the Second Amendment could not foresee the wide availability of automatic weapons,"in the paragraph? It helps set the tone. It introduces the topic / provides background information. It presents the thesis. It hooks the reader.