The document discusses the different types of artificial intelligence. It describes memory-less AI, limited memory AI, theory of mind AI, and self-consciousness AI based on how closely they can simulate human intelligence. It also outlines narrow or weak AI, general or strong AI, and super AI based on the scope of tasks they can perform. Memory-less AI can respond to predefined inputs without learning, while limited memory AI can learn from experiences. Current research is focused on developing general AI that can mimic human intelligence and theory of mind AI that understands emotions and beliefs.