George Hammond <ghammond at mediaone.net> wrote in message news:3B01EB1F.3F817F75 at mediaone.net...
> maxwell wrote:
> >
> > Richard Norman <rsnorman at mediaone.net> wrote in message news:BD9M6.57289$yd.357661 at typhoon.mw.mediaone.net...> > > "George Hammond" <ghammond at mediaone.net> wrote in message
> > > news:3B00D9EE.9B6CC68A at mediaone.net...> > > > maxwell wrote:
> > > > snip
> > > >
> > > > > Well, yes, I did as much. I'll note that your earlier
> > > > > mention of the probable phylogenic constraints,
> > > > > that resulted in decussations, consistent with current
> > > > > ontogenic molecular findings, are another
> > > > > pleasant spot of actual science amidst the folderol.
> > > > > ...Which apparently evoked no further interest, alas.
> > > >
> > > > [Hammond]
> > > > Is it plausible that decussation originated in
> > > > the fact that a lens "reverses" it's image, and the
> > > > easiest way to correct this unwanted optical circumstance
> > > > would be to simply "reverse" the wiring somewhere else
> > > > in the system. To wit: do animals without eye lenses normally
> > > > exhibit a major decussation in the CNS, or is this
> > > > reserved only for animals with lenses?
> > >
> > > Maybe it sounds plausible, but unfortunately there is no
> > > validity to it. Nothing in the nervous "cares" whether the
> > > image is inverted or reversed or upside down or whatever.
> > > The mapping of the visual field to the cortex is highly
> > > distorted over a highly folded surface. Still we see "up"
> > > and "down". Besides, the auditory system and the
> > > somatosensory systems, not to mention the motor
> > > systems, are also decussated.
> >
> > I can add nothing to the excellent reply you've posted save
> > to note that even functional perception is not constrained
> > by retinotopic representation-- subjects have worn inversion
> > prism glasses, and after many days or perhaps weeks of
> > the disorienting perception of an upside-down world,
> > they adapt, and come not to show decrements in motion
> > --unless they remove the prisms, but this change-over
> > acquires greater 'ease-of-transition,' with repetition, and comes
> > to switch rapidly in respect to demand state, though long-term
> > optical rearrangements have perseverant aspects.
>> [Hammond]
> Obviously another incompetent answer. People can learn to
> write with their feet, that doesn't mean it's not an impairment.
> obviously the act of natural selection which decussated the CNS
> was a godsend for animals who had recently developed lenses.
> Poor scholarship on your part I'm afraid.
Hi, George ! Thanks for the straw man attack ! If you get around to
logically addressing Richard's well-presented argumentation, or any of my humble claims, rather than the ignorance you've just displayed,
I'll be glad to engage you. Your picture taken in Border's shows a pretty happy-looking fellow, so I'd guess that the motorcycling and
newsgroups are a good combo for you. Goody! I hate for people
to suffer. Sorry you've missed the ball here, but be that way.
My condolences to you for our not-long-ago loss of Hans.
His speculations were even grander than yours, at times, but
having now read your website content, I think you've exceeded
the old master in the extent of your implausible speculations.
I hope you are proud !
BTW:
I. INTRODUCTION: A PRIMER IN THEORETICAl PHYSICS
should that read THEORETICAL ?
You've got a great website-- thanks!
HTH,
-maxwell
> --
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> -----------------------------------------------------------
> George Hammond, M.S. Physics
> Email: ghammond at mediaone.net> Website: http://people.ne.mediaone.net/ghammond/index.html> -----------------------------------------------------------