http://www.npr.org/blogs/krulwich/2012/09/12/160996525/odd-things-happen-when-you-chop-up-cities-and-stack-them-sideways http://www.npr.org/blogs/krulwich/2012/

http://www.npr.org/blogs/krulwich/2012/09/12/160996525/odd-things-happen-when-you-chop-up-cities-and-stack-them-sideways http://www.npr.org/blogs/krulwich/2012/09/12/160996525/odd-t... is a good read on the topic. very interesting visualisation idea that actually makes some intuitive sense.