It's easy, lets say you are in a christmas market and the ground is covered in snow.
There is a path already, from 1 position to next lets say from food to get some drinks and from there to the toilet and the exit.
It is way easier to walk the path, with the disadvantage, that you have to go get the food first and so on.
The harder way is go make new paths and you can choose what you wanna do first.