This document is a summary created solely for educational and informational purposes. Its content has been written in the author's own words and does not include any verbatim excerpts from the original work. The original work, titled 'Nexus', was written by Yuval Noah Harari, and all rights belong to the author and their legal holders. This publication is not intended to replace the reading of the original work or interfere with its commercial use. No rights are claimed over the original content, nor is there any intention of appropriation. Reading the full original work is strongly recommended for a complete experience. You can legally purchase it at Amazon..