The document introduces artificial intelligence (AI) as the science and engineering behind creating intelligent machines and software systems that emulate human thinking and decision-making. It outlines the core components of intelligence - including reasoning, learning, and problem-solving - and details various applications of AI in gaming, natural language processing, expert systems, vision systems, and speech recognition. Additionally, it highlights disciplines related to AI, such as robotics, psychology, and machine learning, along with techniques used in AI research.