[rexgallorum2]

This was definitely aimed at specialists and advocates of new urbanism. The writer is correct to a degree--post war urban planning (sprawl building) in the US has been a disaster and the paradigm is on the verge of changing (and it will be a generational shift). In some areas it has already changed--this is one issue the author talks about when referring to 'retreat' to urban districts that predate sprawl. I think that bit was referring to the recent tendency for 'walkable' pre-war urban districts to experience rapid gentrification, while post-war sprawl areas (in some cases inner ring suburbs) lag behind and decay. This model doesn't apply everywhere, but it is emerging in some places nonetheless. Right now you can easily find examples of new sprawl construction and rapidly rising property values in pockets of pre-modernist neighborhoods in a single city.