The document discusses different types of artificial intelligence including narrow AI, general AI, and super AI. It provides examples of narrow AI systems like Siri, Watson, self-driving cars, and algorithms for tasks like chess-playing or image recognition. General AI aims to achieve human-level intelligence across all domains but currently does not exist. Super AI could potentially surpass human abilities but is still hypothetical. The document also covers reactive systems, limited memory systems, and potential future developments in theory of mind and self-aware AI.