Good point about complex images. I do not think this issue will be solved anytime soon. An individual's mental image of a complex idea like inheritance or a data structure is subjective. Tying a specific visual GUI to a complex model (that many users would agree upon) is a very difficult design problem. Text allows the user to interpret the model using their own imagery.
I don't think I agree. We know that there are diagrams that come from category theory that behave very well, this is what statebox uses. It enforces certain constraints, so we pivot everything around this and see if we can recover some form of programming from it.
certain cases are still much better done in text and statebox itself is written in text, so nobody is claiming programming itself should be 100% pictures, but then again, I think it can be done and I think there is merit to it.
after all, text is also some sort of picture; on the screen but also in your head
