GR is ultra high tech compared to Newton's laws.

Hi Spaceman, It's an imperical fact that the laws of physics,
including the speed of light in an _Ideal_ vacuum,
are the same no matter when or where it has been measured,
how fast one was moving, or the gravitational acceleration.

Best theory says that's also true for unmeasured places and times.

Q. Do you have a better theory ?
A. No, of course you don't... or you'd be talking about that instead.

GR is ultra high tech compared to Newton's laws,
e.g. the GPS constallation, high energy physics, Riess' work and WMAP.

See: WikiPedia.ORG/wiki/Timeline_of_cosmology and Map.GSFC.Nasa.GOV

Where relativity obviously fails is the fact that
no place in nature could _Ever_ have infinite density,
because infinite gravitational acceleration implies infinite Unruh radiation,
so it'd have to emit more energy then exists in the cosmos.

Likewise, no place could ever have a perfect vauum,
because it takes energy to maintain a vacuum,
so it'd consume more energy than exists in the cosmos.

So there never was a start to the big bang, I posit,
instead, entropy is merely a property of mass-energy,
and everything has just always been, and will always be, dissipating.

I call that Space_Time_Entropy,
where entropy is the so-called cosmic time, a fifth _Spatial_ dimension.

Although the spatial nature of time is easily observed at cosmic scales,
smaller scales introduce many unknowns, making it seem directional to us.

.

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