As described by Manu Fernandez, "MySociety developed this project that perfectly illustrates the utility of georeferenced data. Mapumental tool displays the travel time to reach a certain point from anywhere in the city, thereby helping to understand the temporal distance mobility, a much more useful and practical information than just physical distance."
This type of mapping shows the Space-Time Compression as well as the unevenness of that compression. Why are some areas 'functionally closer?' What makes some places 'functionally farther apart?' How do technology, density and infrastructure influence this phenomenon?
Via Seth Dixon