Sapiens of Yuval Noah Harari has a four-part structure from the cognitive revolution, the agricultural revolution, the unity of mankind to the scientific revolution. Humans range from a “non-dominant animal” to the top of the pyramid, playing the role of the suzerain of the Earth. Are you afraid the following book will be like a dry, tasteless textbook, dogmatic about history and biology you have learned before? The answer is no. That is why Bill Gates praised Harari as the one who tells the history of mankind that makes everyone feel the most approachable.