The tractrix is a curve which tracks the path of a dragged object. On an X-Y graph it will show the co-ordinates of the object where it has been and where it is going. Such a graph is dimensionless but once a dimension is introduced all other dimensional aspects follow. Whether the object is a recalcitrant dog on a leash, a water skier or a log with one end being dragged along the ground, the path followed will be a tractrix shape, ceteris paribus.
This preprint is intended to show how passage of time is introduced to the functioning tractrix.