Civilization Reconstruction

I have always felt that true science fiction and popular science should not just be "time travel as soon as you open your eyes", "the apocalypse is coming", "the system is bound", and then the protagonist cheats all the way with modern knowledge. The truly fascinating part of science is not just the answers, but why humans can obtain these answers and how they can be reproduced stably by others. Many existing popular science works are either like textbooks, accurate but lacking in stories; or they revolve around a few knowledge points and are difficult to form a system; and they lack the ability to truly display observation, guessing, measurement, experimentation, falsification, revision and inheritance. And this is the essence of the scientific spirit. As long as the scientific spirit still exists, science will have the possibility to start all over again. We learn many principles, but rarely how they turn into ditches, rulers, machines, and real-world technologies. This book also wants to make up for the journey from "knowing the principles" to "actually being able to use it". In 2061, thirty-five years after the destruction of civilization, a robot that preserved the knowledge of the old world returned to the surface. The survivors only retain fragmented cognition from childhood, cannot fully read, and cannot understand the machines in the ruins. Thus, civilization began anew. Starting from a "Xinhua Dictionary" and a ruler in the ruins, from a wheat field and a ditch, from literacy, surveying, agriculture, medicine, to mechanics, chemistry, electricity and life sciences - science gradually returned, and civilization was rebuilt. This is not a story about a man who conquers the world with answers, but about humans relearning: how to get answers, and how to turn answers into reality. At the end of each chapter, "One Hundred Thousand Whys" and "Scientific Boundaries" are set up to introduce relevant knowledge and fictional boundaries, and strive to verify scientific details.