View Single Post
  #6  
Old February 5th 19, 03:39 AM posted to sci.astro
Eric Flesch
external usenet poster
 
Posts: 321
Default General Cosmology: universal expansion as an illusion of changing spatial curvature

Steve Willner wrote:
changing speed of light would be new physics.


Just to clarify that c is still invariant in this model, but that
local places would see a different value of c as part of the illusion
of flat curvature. When you said, Steve,

Which distance did you have in mind?


I think perhaps you meant, in a space with twice the curvature as
ours, if you want to walk 20 meters, do you only have to walk 10
meters to get there? The answer is yes, but only if you are seeing
the curvature -- and if you are seeing the curvature, then c is the
same invariant value everywhere across all curvatures. But native
life doesn't see the curvature, it is mapped to flat -- perhaps for
reasons of sanity. And as part of the mapping, the one truly
invariant thing, c, is seen to be different.

Mapping is common, eyesight is mapped to up-is-up in the long term, so
if someone hangs upside down long enough (and still lives), the brain
reprocesses vision to turn things right-side up.

So c is still invariant in this model, but to what value? We are just
seeing the lightspeed resulted by mapping our own local curvature into
flatness -- our own necessary illusion.