No regrets here. And I develop computer models for a living, so I do know a thing or two about them. I did go to the websites of both authors mentioned in the article, just to see if they had a link to a PDF file.
WC would probably have more interest in it than I do. He seems a bit more passionate about the subject.

You model when experiementation isnt possible or practical. And yes, it does usually elucidate where the missing knowledge is at. In the hands of an honest researcher, it can help experimental design quite a bit. 
