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From: hitlong@yahoo.com (gharnagel)
Newsgroups: sci.physics.relativity
Subject: Re: SpaceTime
Date: Sat, 1 Jun 2024 13:35:08 +0000
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Tom Roberts wrote:
>
> On 5/30/24 12:48 AM, Thomas Heger wrote:
> >
> > Spacetime is simply what exists, [...]
>
> No, NOT AT ALL! You REALLY do not understand very basic physics, at a
> fundamental level that distorts all your 'thinking' and everything you
> write.
>
> Spacetime is a MODEL of spatial-temporal relationships observed in the
> real world.
>
> Tom Roberts

I tend to think of physics that way, too, but I was watching this
episode
of How the Universe Works called "The Mystery of Space Time" and had a
few
issues with it:

"Space-time is the fabric of our reality"

"The universe is made of space-time"

"Whatever the substance is, time and space bound together, that's
expanding
and creating the universe we see around us.  It's everything. 
Space-time
is what the universe really is."

And they were discussing the beginning of the universe and inflation
and
expansion speeding up.  Well, I have different explanations.

Gary