60 minutes Scott Pelley: What do you mean we don't know exactly how it works? It was designed by people.

Geoffrey Hinton: No, it wasn't. What we did was we designed the learning algorithm. That's a bit like designing the principle of evolution. But when this learning algorithm then interacts with data, it produces complicated neural networks that are good at doing things. But we don't really understand exactly how they do those things.

https://archive.is/2023.10.09-030925/https://www.cbsnews.com/news/geoffrey-hinton-ai-dangers-60-minutes-transcript/