On Mon, Dec 23, 2013 at 2:10 PM, Edgar L. Owen <edgaro...@att.net> wrote:

> The proof is simply the fact that the time traveling twins meet up again
> with different clock times, but always in the exact same present moment.
> This proves beyond any doubt there are two kinds of time, clock time which
> varies by relativistic observer, and the time of the present moment (what I
> call P-time) which is absolute and common to all observers across the
> universe.

It's all a question of simultaneity, sometimes observers can agree that 2
events were simultaneous, and sometimes they can not, it all depends on the
circumstances; and the amount of disagreement can vary from zero to as
large a value as you'd care to name. So I don't see why zero is more
special or "absolute" than any other number.

And nothing that happens in the Andromeda Galaxy 2 million light years away
can have any effect on me for 2 million years, and nothing I do can have
any effect on Andromeda for 2 million years. So even asking "what are
things like right now on Andromeda?" is a ambiguous question. Does it mean
how things look in my telescope when light left Andromeda 2 million years
ago? Or does it mean Andromeda 2 million years in the future when something
I do here can make a change there? So what does "right now" even mean?

  John K Clark

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