Originally Posted by broncocalijohn
How could they scientifically know? We all run with feet, tendons, muscles, knee caps, etc. He runs with light carbon fibers or whatever thye use. It is apples and oranges. How anyone thinks this is the same is nuts. He runs in the paralympics and kicks ass, he competes with other people with the same prosethetics. Compare apples to apples.
So what you're really saying here is:
Physics - How do it work?