643
Path of least resistance
(slrpnk.net)
Desire paths Desire paths can be paths created as a consequence of erosion caused by human or animal foot-fall or traffic. The paths usually represent the shortest or most easily navigated routes between origins and destinations. https://en.wikipedia.org/wiki/Desire_path
Yeah, but if you make things too curvy they no longer fit together well. And can be hard to build depending on the construction methods used.