The two networks of diffuse and hierarchial traffic display differing characteristics.

These graphs show the differences in speed:

The networks require navigating.  The ideal journey is straight from A to B.  This is the shortest and quickest way:

In reality we achieve this by choosing "the fastest and most direct  route" within a hierachic system.  The choice of combinations preceding and following the main route determine the destination.
Destinations nearby  one another can result in identical start combinations but different end combinations.  If the combinations become too complicated and dificult to remeber...