[ExI] former deceased nfl players...

david deimtee at optusnet.com.au
Tue Sep 22 01:09:40 UTC 2015

On Mon, 21 Sep 2015 13:57:45 -0700
"spike" <spike66 at att.net> wrote:

> The more I think about the control system requirements, I am thinking now
> that tripedal locomotion makes a lot of sense as an intermediate step to
> bipedal.  It would still have a lot of the advantages of bipedal, we could
> still put shoes on them (which has its own advantages), the control system
> for just standing still is trivial, the requirements for balance and motion
> sensing are greatly simplified.  
> We see in nature quadruped and a few biped designs in humans and birds, but
> as I think about it, I am very surprised evolution never came up with any
> tripedal locomotion examples.
> spike

Have a look at the Australian kangaroo. At low speeds it uses tripedal
locomotion with the tail acting as a third leg. At high speeds it transitions
to bipedal jumping, and the tail is used for balance and control


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