But as a general form of communication between humans I think visual is powerful. Even illiterates, children understand visual. Expressing complex abstractions

But as a general form of communication between humans I think visual is powerful. Even illiterates, children understand visual. Expressing complex abstractions in text and understanding it, at present requires a human to undergo about 15 to 20 years of education atleast and that too with some proficiency with the language. On the computing front, I agree that the text is pervasive, reliable. This brings to me to ask myself that is it because since the text was invented to current education system we are conditioned to prefer text? Computing power for human race non-existent until now to tackle non-text communications at a massive scale and hence text was the natural choice. May be in future we will explore/invent ways to handle visual info same as text (to large extent).