Ask AI: Define AI in four dimensional and give corresponding approaches

AI, also known as Artificial Intelligence, is the science and engineering sector involved in creating intelligent machines that perform tasks usually requiring human intelligence. In a four-dimensional context, we can categorize AI as follows: 1. Reactive Machines: These are the most basic type of AI. It's capable of analyzing possible moves—it’s own or its opponent's—and chooses the most tactical move. These machines can't use past experiences to inform future ones. They react to the task in hand and only focus on that. 2. Limited Memory: This type of AI can make decisions by looking into the past. Self-driving cars are a prime example of limited memory AI. They observe other cars' speed and direction, which are used to make decisions. 3. Theory of Mind: This dimension of AI involves understanding that creatures or objects in the world can have thoughts and emotions that will affect their actions. It will be able to understand people's feelings and respond accordingly. 4. Self-Awareness: This is the final stage of AI development and entails machines that possess self-awareness and consciousness. These machines understand feelings, know their state of mind, predict what others might feel, and make judgments. Approaches for each dimension could include using machine learning algorithms for reactive machines, data analysis and predictive modeling for limited memory AI, deep learning and neural networks for theory of mind AI, and highly advanced cognitive computing for self-aware AI. It should be noted these are just approaches, the final stage (Self-Awareness) is a concept and is still not achieved.