I would say the author means that it would be impossible, or would require tech that today's tech cannot do.
science fiction, or fiction, usually means make believe or fake.
Answer: Introduction: draws the readers' attention, Body paragraphs: each with only one main idea and Conclusion: the key points in a few sentences.
Explanation: When writing an essay or a paper, there are three main parts on the structure of the text. First we have the introduction which most contain the central idea of the text, and also the reasons behind the essay or investigation, this helps to draw the reader's attention. Then we have the body paragraph, each one of them should develop just one main idea. And finally we have the conclusion, which must summarize the most important points in a few sentences.
