Another way to look at the social model is kids playing in neighborhoods. It's not unsafe to walk from one place to another because of lousy sidewalks or excessive leaves: it's the roads we put between any place they want to go. This might've been tolerable when each household only had 1 car and it was gone all day, but not now that everybody has a RAM Child-squasher 2500. In my neighborhood the sidewalks also just... end randomly, would be awful to live here and be blind. Would be a lot better to be blind if you weren't a misstep away from getting run over.