According to some Fresno locals, it was 30 years ago -- perhaps because of Proposition 13, perhaps because of the falling price of grapes -- that the city at the heart of the San Joaquin Valley went into decline. Since then, accusations of corruption, dismal economics, and nearly unmitigated low-density development have made the city both the butt of jokes and one of the nation's most forlorn urban areas. It has not suffered the spectacular fall of, say, Detroit -- but only because it never rose to Detroit's industrial prominence in the first place.