Why do Harb Carvers work? This is not a skate or rollerblade that have the thin blade or wheels down the center under the foot. Skis don't have a center blade, skis have edges on either side which makes for a different dynamic. The biomechanics involved in tipping Harb Carvers is different from skates, skates fall over on their own. Harb Carvers and skis (if you want to carve turns) need to be tipped or lifted on one side and ridden on the other edge through a turn. This requires different skills. Also, you cannot twist, steer, or rotate your legs to make Harb Carvers work. The engagement action required for Carvers to arc and make a turn has to begin with the feet. The feeling is just like carving a clean arc on hard snow. Movements have to begin with the feet and ankles. We did years of testing with all types of skiers from World Cup racers, ski instructors to intermediates. The limitations of each individual's technique became immediately obvious on Harb Carvers. Some instructors were so frustrated they said the Carvers didn't work. I just had to sit back and watch as their frustration took them over. Carvers prove one thing, you either have carving ability or you twist/steer on snow, but you can't do the later on Carvers. If you are looking to take the real test about your skiing, try some Carvers. If you master them at some level you will surely improve your on-snow skiing capabilities. Skiing and ski instruction have many myths and false understandings, many are perpetrated by misconceptions in National teaching systems. One outing on Harb Carvers and you will discover if you are engaging a ski or twisting a ski. Even the slightest twisting action will bring tears to your eyes. There is no hiding from your movements on this tool they expose everything.