Will a new Detroit rise out of the ashes of its current crisis? Some cannot imagine the city Forbes recently picked as the nation's most miserable can reinvent itself. Others place their hopes in the rise of small businesses, including urban farms, manufacturing urban bicycles, hand-made jeans, and even luxury watches. Although new startups have, so far, created only a few hundred jobs, they represent economic diversification, which may prove significant for creating a viable new Detroit after depending on one industry to anchor the community's welfare for a century. This is not the first...