Replying to So, uhh...

My mind is killing itself over this, and I jsut want your opinions on it. The contact point of a circle to a line is a point, and the contact point of a plane (ski) to a cylinder (any rails involving circles. Single barrel, double barrel, large tube, etc.) is a line. A line does not have a determined width, and if it does it is a quadrilateral. Technically speaking, if we slide a circular rail we are not touching it, even if it is multiple barrels wide. If we are are doing switch ups, etc, on the rail, are we just doing them in mid air? Help please.