Point and counterpoint, 2008, juxtaposes a line that connects two points with a line that serves as a point of tension.  The twine suspends a square on one end while tied to a rock on another end. 

What distinguishes the structure suspending a square from the ground and vice versa?   They seem part of the same phenomena, i.e. part of the same contingency, as two counter-balanced objects with indistinguishable ends.  Structure uses the ground as its principle counter-balance to the extent that it denies clear delineation between itself and the ground.