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Re: Yet more on dinosaur quad climbers

On Fri, Jul 12, 2013 at 07:12:32PM -0700, Mike Habib wrote:
> On Jul 12, 2013, at 6:58 PM, Ruben Safir <ruben@mrbrklyn.com> wrote:
> > He might present something reasonable.
> > I'm always interested in hearing.
> If you want to stop being condescending and present some data, then I'd be 
> interesting hearing.
> > PS - the turtle problem is different.  Accerting that the shell was
> > not evolved because of its amour advantage would be the equivilent
> > argument…
> Indeed.  And in a similar sense, the early stages of shell expansion may not 
> have been for armor, because the earliest changes in the turtle skeleton may 
> not have conferred much protection.  Just as for feathers, a functional shift 
> likely occurred.  Structures don't evolve for functions they'll have later.

We are not talking about precursors and proto feathers, which were
clearly NOT for flight.  We are talking about wings and flight feather.