Originally Posted by michaelA 
In particular I was interested in the rates-of-change related to the rates-of-skier-motion for each given model (AWT vs. PWT).
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That's why I modeled the entire process from Apex to Apex on spreadsheets - to see exactly how much weight/pressure was actually available to bend each ski assuming a typical 60/40 generic distribution to start, assuming each leg w/gear represents 20% of the skiers total Mass and taking available CF/Gravity into consideration at each moment along the progression through transition.
Personal perceptions and beliefs are often a result of what we skiers feel. Unfortunately, we comparatively 'feel' more weight on a bent leg than is actually present as compared to our straighter leg. We also intellectually perceive weights/pressures at each foot/ski depending on how we typically move during transition such that our beliefs get skewed: We simply don't know how much weight/pressure would have been present had we not implemented our typical movements. Instead, we convince ourselves what that un-experienced moment would be like based on the fact that it's contrary to what we already believe is necessary for things to "work properly".
I think we often rationalize our beliefs and expectations, even developing mechanical explanations to support our experiential expectations by cherry-picking isolated mechanical concepts (those that support our belief and not those that might disprove it). By putting actual numbers on a spreadsheet I can eliminate any perceptions or beliefs to see if something should work regardless whether I currently believe it or not. I didn't initially believe the PWT was a workable idea and had ways skied with AWT before I worked out the mechanics. Now I know it works - and perfectly at that. I also went on to prove a skier could do short radius edge-to-edge dynamic parallel turns with PWT on slopes even up to 65+ degrees... (but that's another story
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That's great that you modeled it with spreadsheets. I'm sure that you make your model take into consideration many variables, however, maybe not all of them. Empirically, that little PSIAMAN pin guy also illustrated PWT being possible. Also, empircally, going out and skiing like that also shows it working.
However, making judgements about what "we" "feel" and "perceive" based on your biases isn't necessarily science either. I recently had knee surgery and have been dealing with a very very weak leg. It has taught me a lot in the feedback, the, "Oh, no, it's collapsing again - I thought it could handle that" times that I've had. However, even without one bad leg, I think it depends on the skier how accurate their perceptions of weight and pressure are.
Even so, regardless of what you think you or others feel, when you are out there skiing, you end up having to go by what you feel because that is all the feedback you are going to get. I've taught some students that I label as kinesthetci illiterates. They really don't know what they feel and mostly it's due to the gobbledygook that is in their head and emotions.
So, I'll continue to cast my vote for what I do and what I see others doing, not what someone on paper says we can do, are doing or is possible. Now, I'm not trashing your modeling. I think it's great. If my son were here still, I'd be feeding him stuff to model for me. I'm just saying that it's great to mathematically model (heck my brother spends his whole days doing that with economic world and another brother with the world of optical physics/lasers). I'm am simply saying that when it comes to skiing, I put the snow before the math.
.ma
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Cookie,
First, no need to apologize to me. I've just noticed (with growing irritation) the innumerable times you've charged virtually everyone here with 'lacking understanding' of concepts and ideas presented despite receiving assurances to the contrary.
People here may have different points of view and may disagree with you - that doesn't mean they didn't understand, don't understand or aren't capable of understanding and I'm asking you to respect that. The reason I chose to say something (again) is that you continue to escalate and are now even deriding entire classes of people as being incapable of understanding the very things you apparently believe yourself capable of understanding. If you can understand something please assume others here can understand it also - unless they themselves declare otherwise.
As to posting my private remarks openly here, again, apologies for that. I'd normally have sent a Private Message to let you know what I (and many others) are seeing and perceiving from the way you're liberally sprinkling 'dismissals' of everyone else's thinking and reasoning capability. Unfortunately this "new and better" software has killed our ability to send PMs to people who have Facebook accounts. (GRRRRrrrrrr)
My post above was not intended as an 'attack' of any kind and I genuinely hope you see what I'm trying very hard to communicate. We broadcast the most telling image of ourselves in how we address others and I'm simply pointing out the increasingly poor image I (and many others) are receiving from your (perhaps unintended) tendency for deriding the competence of others whenever they disagree with you.
We've had countless 'Posturing Wars' here in the past and have only this last year gotten things on an even keel again. Frustrations, irritations, growing anger and open hostilities generally come about progressively due to ongoing subtle insults, superiority posturing, contemptuous tones and ridicule/sneering about other people's perceptions, preferences, ideas, opinions and competency. These are good people here and are likely to become your Virtual Friends if you can avoid continually (even if accidentally) talking to them as inferiors.
My own highest and best suggestion is that you try what I did when I first started posting here - write your posts in a separate editor (perhaps Notepad or Word), re-read it when done looking for potential errors (and infer-able insults) and otherwise mull it over for a while before tossing it into the Epic Editor for finalizing. I think you'll find you'll create far better content as well shorter posts. Again, no offense intended (nor taken - just irritated as I rather like these people and I'm aware just how competent they are).
I gave you my email cookiebewley@gmail.com. You are more than welcome to continue expressing your irritation publically if you want.
FYI, I do not always write my posts on the screen. I go back and reread them and edit them regardless of where I wrote them. I'm sorry that my posts are too long for you. Again, how is this "kind advice" and "continued mild chiding" helpful except maybe to relieve some of your pent up displeasure with me? I do not try to irritate you, but I really can't control your reactions when I make a general statement about a group or simply state my beliefs on skiing.
Rest assured, that my blook pressure is not up, I am not irritated, frustrated or angry, or hostile. I do not believe that I have been talking to anyone as inferior and it's too bad that is your perception, both yours and others. If you and others have been developing a poor image of me, that's okay. I am who I am. You can't like everyone in the world. I tend to be rather black and white and dogmatic in my statements. However, prove me wrong and I change. I do come from a very scientific background and have a hard time being politically correct and all that stuff.
I'm not too sure about the moderators, but I do think if you want to continue to advise me, you probably should simply email me - cookiebewley@gmail.com. You do realize that engineers are not the ruler of the world, don't you?
Contractors are! 

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.ma




















