How to give directions
http://www.marginalrevolution.com/marginalrevolution/2008/11/how-to-give-dir.html
...there are two ways to give directions. One is using a so-called "route perspective", as in the example above. This adopts a first-person spatial perspective and is characterized by references to turns and landmarks. The other is a so-called "survey perspective", which gives directions as if looking down upon a map. This type of direction giving is characterized by references to cardinal...