"21 Lessons for the 21st Century" is a book written by Yuval Noah Harari that explores the most relevant topics of our time. The author offers the reader 21 lessons aimed at analyzing and understanding the complex challenges that society faces in the modern world. From artificial intelligence to biomedicine, from global warming to politics - each lesson reveals the discussed topic from different angles, prompting the reader to think about the future of humanity. "21 Lessons for the 21st Century" is a fascinating and really important book for those interested in the development of society and technology in the modern world.