There's another article on the front page right now, http://www.venturedlife.com/episode-three that suggests Detroit could be the next Silicon Valley. I'd like to see an analysis of THAT article in the context of the findings reported on in THIS article.
Oakland and Washtenaw counties (adjacent to the county Detroit is in) have college graduates at rates far higher than the national average.
Washtenaw is about on par with San Francisco (but also only ~1/3 the population).
I think it's relevant because you don't need all those services to exist in the core of Detroit or a huge migration to get access to lots of educated people.