vail snopro, nicely stated: We're all 'wrong', yet we're all 'right'. All the reader needs to do is tweak a context to push it one way or another. I can 'make' people right by seeing it their way
or I can make them wrong by deliberately seeing their idea in a way they didn't intend and preferably in a very conflicting context
I would also admit that in some cases I've made no attempt to connect-the-dots back to general skiing after presenting detailed points. I chose instead to elaborate on specific motions and material relationships in attempted isolation
of their application(s) to any specific skiing technique or school of thought. At other times I tried to show a reasonable application without intending to support any 'side' in the typical factions present.
I was hoping to narrow discussion into precise realities of finite elements (and their nature) rather than let it expand into the 'rightness' or 'wrongness' of particular applications. Doesn't seem to have gone very well.
On the high heeled shoes thing - there are two considerations (in isolation of actual skiing - OK?). The first is that by raising the heel in relation to the floor we enable a greater range of knee-forward capability.
When standing on a floor with 'flat feet' dosiflexion only permits a certain amount of forward shin tilt before the heel comes up off the floor. Add some heel lift and we increase the distance the shin can move forward before the heel comes up.
When we raise the heel we've also increased the amount of leverage
we have against the front of the boot because we've effectively shifted the 'lever' of the lower leg upward into a better position to crush the boot-front both forward and downward. (though we may also have misaligned our ankle joint and the boot's cuff hinge in doing so)
The second area worth looking at is what happens when the leg is tipped to the side. While High Heels
were mentioned out of humor for these very manly men, many sneakers have greatly 'lifted' heels and will produce the same effects - though not quite so noticeably.
When we tip our leg (say 30-degrees) with both heel and forefoot firmly on the floor we can easily keep a relatively even pressure from front to back of the foot. There will be a given set of muscle tensions and very little 'torque' felt anywhere in the foot or leg.
When we raise the heel (say 1 inch higher than the toes) and perform the same experiment we start finding some areas of new tension in a variety of leg muscles. There is now considerable torque created by gravity (the heel wants to rotate toward the floor). We compensate for this by adding active muscular counter-twist to keep the heel up.
The rigid shell of ski boots provides a 'wall' against which the otherwise rotating heel can be supported and helps diminish the effect on the ski. But we're still dealing with a support (leg and foot) that internally
is somewhat 'out of alignment' in a sideways supported sense.
If you don't wish to play with shoes, try a two-by-four. Do a vertical cross-cut across the wide side at an angle of 20-degrees about 1-inch from the end (producing a small triagular piece). Sand the cut of both pieces somewhat smooth.
Replace the cut-off piece and stand the 2x4 straight up on top of the cut-off piece. Now tip the 2x4 perpendicular to the wide side while supporting it with one finger in the middle of the wide side somewhere near the other end.
When it gets far enough over, the 2x4 will twist
off the little slanted block. You'll be able to keep it on the block longer by moving your finger toward the 'lifted-heel' side of the 2x4 instead of the middle - *or* by applying a counter-torque to the 2x4, preventing it from twisting off.
Once again I'm not connecting the dots in order to let the reader evaluate the idea in isolation of active applications. I know participants can easily change the context as they apply it to a particular skiing technique in order to 'make it work' or 'make it fail' as they see fit.