These biopace rings have served to reveal the ways in which we're not entirely rational in our understanding of our world.
We assume that they're not effective simply because they weren't exclusive to expensive bicycles.
We assume that they are bad for everyone's knees because my knees hurt when I used them.
Biopace is a gift from Gaia, not so much to help us cycle, but to help us look into our own hearts.
On another (serious) note, I heard that they're Egged shaped, not oval. Wouldn't that make the peddaling experience different for each leg??