“What” is the literal move required.
“Why” is the physics of slalom or reason for the What
“Interpretation/Implementation” is the way a skier tries to achieve the “What”.
I bring this up because I think there is some confusion created as conversations jump from What to Why to Interpretation/Implementation.
The “Why” makes for fun conversation but it has NEVER actually changed what I do on the water. The “Why” tells me I need my ski flatter in the water approaching 2 ball (On Side) and for a number of reasons. The “Why” does not offer instructions on “What” I actually need to do.
When we get to “What” things get a lot less quantitative. All I know is I need to get forward. In this case “What” is literally move COM forward.
Interpretation/Implementation is generally totally disconnected from the “Why”. It could be something as simple & obscure has changing where you are looking at a certain point. In the case of moving my mass forward into 2 ball, I made a lot of progress this week by focusing on my right hand at one ball. How this is true does not matter. The point is that I believe skiers need to compartmentalize their thinking into these three buckets or something similar.
I often read advice from one Baller to another that randomly mixes these 3 buckets. Maybe my favorite example is one Baller telling another to get their hips up or more stacked. That is a “What” and for a skier who does not know how to translate it to an “Interpretation/Implementation” it is a useless suggestion.
Another way to put is that "What" is the destination without a map and "Interpretation/Implementation" is the map.
When I watch less skilled skiers I coach or comment with Interpretation/Implementation. The more skilled the skier the more I tend to comment with "What" I see.