High-density and car-hostile != walkable. If walking means that you have to always be watching your step to avoid feces and used hypodermic needles, and you're

High-density and car-hostile != walkable. If walking means that you have to always be watching your step to avoid feces and used hypodermic needles, and you're constantly getting accosted for money or worse, that's at least as unwalkable as the stroads of suburbia.