I have no idea what Max's background is, but this intrigued me:
|I tip my foot (note I said foot rather than ankle) which leads to my tibia being tipped which leads to the femur being tipped which leads the hip moving into the turn. This is the kinetic chain at work.
Kinematics is certainly an interesting topic, but by definition it is descriptive of motion without regard to the forces or masses causing that motion. To understand human kinematics is to be human. It is an interesting topic worthy of study, but the a priori knowledge of it that we all have is sufficient for quite good skiing.
As Ott quite eloquently puts it, gravity is the fuel and the interaction between the snow and the skis is what we use to execute our will over gravity. This is the realm of dynamics. A skier attached to a boot, binding, and ski is a frighteningly complex bit of multi-body dynamics.
The Ask A Pro version of this thread is good. It offers simple and accurate information on the mechanics of how the new turn is started as well as useful exercises for creating the proper movements.
This thread, OTOH, offers mental exercises as Actual Truth(tm), which is pure and utter horsefluff. No, you don't tip your downhill ski onto the new inside edge while your uphill ski is still on its uphill edge. Chances are pretty good you'll actually tip the old inside ski first and be on both medial edges for a bit. Dozens of videos and images of high level skiers prove this empirically.
The primary way we move our CM in relation to our skis is through the flexion and extension of our legs. That was said in the AAP thread, and it is trivially simple to prove. Offering mental-self-love as The Way The Turn Starts as done in this
thread is confusing and rather worthless. If someone wants to post a valid analysis of the dynamics that shows tipping the foot
in a high performance ski boot does something non-trivial for their ski technique, I'd love to see it. FWIW, I have every reason to believe such an analysis would show validity of that point, but I also have little patience for hand waving offered as truth.
In short, put up or shut up.