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When you put a child on two skis for the first time in its life, it will experience a feeling that it has never felt in this form before. It will glide downhill as if guided by magic because gravity has a stronger effect on the body than the frictional resistance of the snow under the skis. And long before the child realizes what is actually happening, it will come to a stop and it will stand at the bottom of the slope with a big grin on its face.