Originally Posted by sharpedges
As a biped, my bigger balance challenge is balancing on three feet, not one
And I confess to difficulty balancing on two feet during bipedal ambulation -- it feels ungainly like doing a sack hop race. But I can walk for miles and miles balancing on one foot at a time. I guess I have my ancestors to blame that I didn't wind up further down the biped evolutionary ladder with intrinsic two footed balance. Thanks, Mom and Dad.
Though I've seen little value is getting in internet debates with you, I'll add for clarity sakes so other readers understand my point and aren't distracted from what is really happening while on one ski.
Yes we constantly balance on one foot at a time as bipeds; walking, running, dancing and skiing. Walking is also a controlled fall like in skiing. If you don't think it is, try stopping when your heel is a 1/4" from striking the ground. Once your swing foot (not sure of the terms) gets off the ground, as it gets more and more in front of you, you are falling (#4 and #5 below).
Walking and skiing are similar in that aspect as we are constantly transferring balance from one foot to another. When you ski on one ski, you are no longer a biped. There isn't another leg to catch you and our bodies are out of natural balance and we have to compensate by making positional adjustments. In that scenario, it is more like standing on one leg than walking. The difference between walking and standing is motion. I understand that your body is moving, but it is more like going up an escalator or using the magic carpet in the beginners area. There is movement, but no transfer of balance. That is key for bipeds.
Can you stand on one foot for as long or as well balanced as you can on two? How far can you walk for with just one foot? I doubt miles and miles. You can thank your parents for that too. Let's pretend your legs have the strength of a WC athlete so distance/strength isn't an issue. Do you really think it will be easier for your to travel using only your right leg and not involve your left leg at all? How about on a bosu ball like originally mentioned. Easier to learn starting on one leg or two?
I don't see how you are comparing apples to apples.