The author hereby declares:

First, this book never advertises itself as hard science fiction from beginning to end. The author has never been interested in these three words. The classification of science fiction as soft and hard is a false proposition.

Second, most of the common questions that often appear in book review areas can be answered in the text.

Third, this article has stated at the end of the first chapter that if the content described in this article is different from your cognition, everything is subject to your cognition, so there is no need to point it out specifically to show your sense of existence. You know this book

It’s okay as long as it’s wrong. The author also knows it’s wrong, but I just won’t change it.

Fourth, the author basically does not delete posts and does not suppress comments. He does not manage the book review area very much. Occasionally deleting posts is just a matter of whim and his brain twitches. He is not responsible to anyone and does not need to explain to anyone.

Fourth, the author believes that there are generally no logical problems that cannot be circumvented in this article. This judgment is only based on the author's superficial understanding of aerospace technology and its development history. If you think it is wrong, that is your freedom. For often

To all the great logicians who appeared in the book review area, the author can only say: My temple is too small to accommodate your giant Buddha. Please go out and turn left. Don't leave it alone.
Chapter completed!