Have you noticed that as we age, we become more like children, especially as it relates to mobility? On Sunday I watched a toddler walk away from me and toward her smiling mother. Each step she took ...

I can’t see that self-righting shape being of use in re-orienting moon landers. It would work only on a smooth and level surface. A design reminiscent of Weebles (self-righting toys) would be better.