We generalize pretty well. One could say: "it took you 20 years to learn python!", but actually I learned python, Java, c#... Software engineering, machine learning... How to play guitar, how to cook.. .How to speak Portuguese, how to speak English... And thousands and thousands of different things which build on each other.

You can give a programmer a few kb of code in a new language and that will give him a small grasp of how it works.