Terminator and similar movies depict a world that is controlled by AI and robots. For the mainstream this may seem outlandish, but notable figures like Elon Musk have expressed considerable concern about this scenario becoming reality. The impeding threat however is not self conscious robots or AI, It is human misuse. There are many sub fields of AI including machine learning, Deep Learning, Speech Recognition/Natural language processing, image processing/computer vision, Facial recognition, ...