Why ChatGPT and Bing Chat are so good at making things up

Over the past few months, AI chatbots like ChatGPT have captured the world’s attention due to their ability to converse in a human-like way on just about any subject.

https://arstechnica.com/information-technology/2023/04/why-ai-chatbots-are-the-ultimate-bs-machines-and-how-people-hope-to-fix-them/