> "How to reconcile these things?" 1. 'urban lead' is a studied off-shoot of the lead hypothesis. Detroit's lead situation is a studied and known problem. So

> "How to reconcile these things?" 1. 'urban lead' is a studied off-shoot of the lead hypothesis. Detroit's lead situation is a studied and known problem. So lingering crime in Detroit is actually expected under the lead hypothesis. Particularly as the population shrinks and the remaining citizen 'average' shifts poorer, with a more-toxic environment. 2. 'structural' crime. Opportunists considering theft as a means to an end might be dissuaded as the risk/reward equation shifts. But convincing a (drug) gang that it's no longer a good idea to murder a rat/rival is much more difficult. 3. Detroit's shrinking police coverage. The police department has explicitly warned people away from certain areas of the city, because they don't have the resources to provide effective coverage. This can only be interpreted as an 'opportunity' for structural crime. http://usnews.nbcnews.com/_news/2012/10/08/14294269-visit-detroit-at-your-own-risk-police-union-warns?lite http://usnews.nbcnews.com/_news/2012/10/08/14294269-visit-de...