artificial intelligence, parallel intelligence, parallel philosophy, intelligent industry, intelligent economy, parallel economy, parallel industry, dual equation, Electronic computers. Computer science, QA75.5-76.95

Starting from Karl Popper’s Three Worlds, the knowledge system facing three worlds and the corresponding philosophical problem were proposed.The scope of traditional philosophy from being and becoming to believing was extended, and a new parallel philosophy as the foundation for intelligent science and technology was proposed.The dual equation systems and parallel testing were introduced through ACP, and cyber-physical-social systems (CPSS).This will enable a true DAO approach for intelligent parallel industries and smart societies: trustable, reliable, usable, and effective +efficient (true), distributed + decentralized, autonomous + automated, organized + ordered (DAO), and the corresponding distributed autonomous organizations and operations (DAOs).