OopS! It left off the explaination. This Guillemot (a sea bird) egg evolved in this shape so it could not roll out of the nest and down the seaside cliffs, where it was laid! Cool!
I'd be curious to know how it did on a sloped surface, but its efficacy on a flat surface is beyond argument!
That's an intelligent design isn't it?
LOL couldn't resist.
An evolution in REVOLUTION, I would say!