As we celebrate the success of AI, it is necessary to investi-gate the boundaries of AI so that the society does not fall for commer-cial misleading claims, and prevent dangers of misusing AI. We exploreseveral frontier questions from if AI will replace human beings, to AIconciousness, and to our jobs and education. While some things in thisessay are speculative, some other things are mathematically proved. Weargue why AI and AI generated contents should be segragated, and whyAGI cannot make innovations about things independent to the humanknowledges without external experiments.