I'm confused by their introduction. The author cites changes in family structure in two specific neighborhoods (Fishtown in Philadelphia and Belmont in Massachu

I'm confused by their introduction. The author cites changes in family structure in two specific neighborhoods (Fishtown in Philadelphia and Belmont in Massachusetts) but uses this data point to imply an unsubstantiated national trend. And all the while overlooking any other reasons why the presence of fathers declined in one white community after the 1960s. Henderson suffers from the same research bias as Charles Murray, the author of the cited study. I don't disagree with Henderson's conclusion in general, but the journey from A to B is inconsistent as Fishtown and Philadelphia (the poorest city in America) as a whole are substantial case studies on deindustrialization and the impact those lost jobs have on a once thriving community. This deindustrialization is also partially responsible for the increase in drug use and drug activity in Fishtown during this time of unprecedented job loss. Fishtown used to be the opioid capital of the country in the 1970s. This activity has since been pushed into the adjacent neighborhood of Kensington [1]. The impact of deindustrialization and the loss of good paying factory/union jobs has more to do with the breakdown of the family unit in the last 70 years than any of the other idea Henderson cites. 1. https://www.nytimes.com/2018/10/10/magazine/kensington-heroin-opioid-philadelphia.html https://www.nytimes.com/2018/10/10/magazine/kensington-heroi...