Since its launch by Open.Al in November 2022, the large language model ChatGPT (Generative Pre-trained Transformer) has shown a remarkable ability to interact in conversational dialogue form and provide responses. It was trained on data about code and information, and also trained using human feedback. All these require big data. (1) What does "big" means by "big data" ? (5%) (2) Some say, "ChatGPT, AI can boost the global economy by removing language barriers for immigrants seeking employment." Please comment on it. (10%).