As a programmer, I do not expect a designer to know, understand, or be proficient with coding. I don't disagree that any designer who can do both has a tremendous advantage. But, I think it should be possible to just sit down, "draw a picture", and have it just work on every current platform, at various screen resolutions, and various internet connections.

That's not possible right now, but I think that's because us programmers have done a terrible job. We have built awful tools. Some are less awful than others, yes, but with 2012 just around the corner and about two decades of web development behind us, we still have not developed a tool which allows a designer to sit down, and do what they are best at, and make their imaginings into a working reality without the assistance of an engineer who speaks a strange vocabulary.

I would not expect a sculptor to need to know the finer points of structural engineering. Any sculptor who did would have a clear advantage over their peers -- but I am skeptical that it would make them a better sculptor.