Comment by seanmcdirmid

The worst designers I've worked with were the ones who knew how to write code and picked up illustrator by playing with CS...hey look I can draw! Really, the training and practice that goes into a good designer is huge, if they also learn writing code, something has to give. Visual designers are much more difficult in this regard than interaction designers, who are often just former programmers anyways (though the best ones I've worked with schooled as...architects).