The three main types of artificial intelligence (AI): machine learning, deep learning, and AI brigades. are because because they are because these technologies are important for different types of applications. For machine learning, it is used in a variety of applications such as natural language processing, predictive maintenance, and so on. For deep learning, it is used in Hector's Hensible program, which can do things likeller images and recognize objects. And for AI brigades, these technologies are used to create collective intelligence (CH) models, which are used in machine learning and natural language processing applications.