On the other hand, I would argue that engineering, architecture, and industry rely heavily on visual languages such as technical drawings, blueprints, control/p

On the other hand, I would argue that engineering, architecture, and industry rely heavily on visual languages such as technical drawings, blueprints, control/process flow diagrams, etc. Text is a good bet, but it's inadequate for a lot of problems related to the physical world that require spatial reasoning. Agreed. Diagrams can of course be expressed as text, but would you rather read SVG XML, or look at the actual diagram?