I was actually looking for this http://jakeseliger.com/2015/12/27/why-did-cities-freeze-in-t... and we had an interesting discussion going at https://news.ycombinator.com/item?id=10798352

Both might still be a bit too rumbling. If you want the least rambling, the Economist is almost always the way to go:

http://www.economist.com/blogs/freeexchange/2015/04/land-val...