Anecdotally, when I write code, I don’t “talk in my head”. The structures that I have in my brain are in fact difficult to put into words, and I can only vaguely describe them as interconnected 3D shapes evolving over time, or even just “feelings” and “instincts” in some cases.

The code that comes out of that process does not, in fact, describe the process fully, even though it describes exactly what the computer should do. That’s why reading someone else’s code can be so difficult - you are accessing just the end product of their thinking process, without seeing the process itself.