How Does ChatGPT Sound Like a Real Person?

You ask ChatGPT a question, and seconds later it answers like someone is really talking to you.

But there is no tiny person hiding inside the computer. So how does ChatGPT know what to say next?

Is it thinking, remembering, or just making a very clever guess?

It learned patterns from huge amounts of human writing. Then it builds each answer one piece at a time. That explains why it can sound kind, funny, and surprisingly smart. But it also explains how it can sound completely sure and still be wrong.