AI is the future of science, technology, and business - and there is no person better qualified or situated to explore that future than Max Tegmark. What has AI brought us? Where will it lead us? The story of AI is the story of intelligence - of life processes as they evolve from bacteria (1.0) to humans (2.0), where life processes define their own software, to technology (3.0), where life processes design both their hardware and software. It raises questions that we all need to address: What jobs should be automated? How should our legal systems handle autonomous systems? How likely is the emergence of suprahuman intelligence? These are the issues at the heart of this book and its unique perspective, which seeks a ground apart from techno-skepticism and digital utopia.