Ok, I've dug up some more info. Rather than bother with all the references, I'll just explain it, and then let the "opposition party" fact check it and correct where relevant.
The sidecut of a ski traces out an oval. In order for a ski to carve perfectly, it must trace out a circle. When the ski is bent just the right amount, it traces out a circle. So, a ski with a given sidecut has one radius, Rsc, where it will trace out a perfect circle and thus one edge angle for "perfect" carving. A ski with a small radius will perfectly carve small circles, but not large circles. A ski with a large turning radius will perfectly carve large circles, but not small circles. Modern skis have a small turning radius, so they carve small circles well, but not large circles. They will skid for large circles. At the top of the turn, carving arc to arc, the turning radius is large, so the ski will skid, until the turning radius is tightened to match Rsc. Ironically, older style skis with a larger turning radius will carve more cleanly at the top of the turn, but will not carve as cleanly for tighter turns.
Peace.
The sidecut of a ski traces out an oval. In order for a ski to carve perfectly, it must trace out a circle. When the ski is bent just the right amount, it traces out a circle. So, a ski with a given sidecut has one radius, Rsc, where it will trace out a perfect circle and thus one edge angle for "perfect" carving. A ski with a small radius will perfectly carve small circles, but not large circles. A ski with a large turning radius will perfectly carve large circles, but not small circles. Modern skis have a small turning radius, so they carve small circles well, but not large circles. They will skid for large circles. At the top of the turn, carving arc to arc, the turning radius is large, so the ski will skid, until the turning radius is tightened to match Rsc. Ironically, older style skis with a larger turning radius will carve more cleanly at the top of the turn, but will not carve as cleanly for tighter turns.
Peace.