Ara has a great quote on Visual Modeling: "It's easy to map what the architect drew on his board to the real tangible building.". What's worse is that even with that advantage, architects and engineers screw up; they design things that are physically impossible to build and leave it to the builders to sort out. I remember seeing a special on the design of the Boeing 777, the first airplane designed entirely on computers. One of the big advantages was that the program could detect design conflicts, but even then, design problems leaked onto the production floor - and this is a company with a strong engineering background. Producing working code from visual models is probably about as hard as designing a physical object to be built without human intervention. Widgets are orders of magnitude easier to automate than airplanes. Ara makes a comment I don't agree with though: "the civilization is built by architects rather than masons, right?". I think this flies in the face of what we see all around us.