i guess i prefer the word ' transition ' rather than ' edge change ' because a transition is by definition a process with a beginning middle and end. the concept of an actual *change* of the edges, on the other hand, seems like a pretty brief and defined moment - that instant when the skier is no longer riding one edge of the ski, but instead is riding the other edge. semantics? for sure, but slalom theory is already complex enough that i think any effort to clarify what we mean is effort well spent. as always, imo.