[kazinator]

Low density is not the reason you have to walk a long way to get to a house that it would take you seconds to get to if you climbed a backyard fence. It's just the stupid tree-of-cul-de-sacs layout.

Most of Japan isn't dense; it's single-family, detached dwellings. Those neighborhoods are walkable in spite of that. In metropolitan areas like around Tokyo, sure the houses are on small plots and close together; but houses are houses. It's still pretty low density.