When you talk about internal, non externslised knowledge, do you mean stuff like "how to ride a bike"? I can see how AI wouldn't learn that from reading/listen

When you talk about internal, non externslised knowledge, do you mean stuff like "how to ride a bike"? I can see how AI wouldn't learn that from reading/listening to humans. ot would have to learn for itself with reinforcement learning. I wouldn't call thst language though. But I couldn't think of any kind of non-external knowledge that can be described as language?