"The Knowledge: How to rebuild the world from scratch" is a fascinating study by author Lewis Darwin that challenges readers to think about how we might rebuild the modern world if faced with an apocalypse or the threat of total destruction. The book carefully examines a wide range of sciences and technologies: from electricity production to medicine and agriculture. The author helps readers imagine scenarios in which the world will have to be rebuilt from the ground up, paying attention to key aspects that will help survive and restore civilization. This book is not only an exciting adventure for lovers of science and fiction, but also a practical guide for those interested in the future of humanity and its possibilities.