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Date: Thu, 14 Jul 2016 23:32:36 -0700
From: The Starmaker <starmaker@ix.netcom.com>
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Subject: Re: Absurdity Called Einstein's Twin Paradox
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Gary Harnagel wrote:
> 
> On Thursday, July 14, 2016 at 5:41:27 PM UTC-6, Pentcho Valev wrote:
> >
> > Special relativity predicts that either twin ages more slowly than the other,
> > as judged from the other twin's system:
> 
> Of, course they are VERY far apart when they make those predictions.
> You can only be sure of what REALLY happens when you bring them together
> at the beginning and end of the trip.
> 
> > http://www.people.fas.harvard.edu/~djmorin/chap11.pdf
> > "Twin A stays on the earth, while twin B flies quickly to a distant
> > star and back. [...] For the entire outward and return parts of the
> > trip, B does observe A's clock running slow, but enough strangeness
> > occurs during the turning-around period to make A end up older."
> >
> > Special relativity's prediction that either twin ages more slowly than
> > the other (as judged from the other twin's system) leads to absurdity
> > unless "enough strangeness occurs during the turning-around period to
> > make A end up older". However, during the turning-around period, the
> > traveling twin is very far away from his stationary brother so the
> > idea that "enough strangeness" is somehow produced during the turning-
> > around period and this "enough strangeness" miraculously affects the
> > distant stationary twin is simply idiotic."
> 
> Yes , it would be absurd if the "strangeness occurred at the stationary
> twin's location, but it doesn't:  It occurs at the traveling twin's
> position.  Proof:  Let there be another observer moving with the traveling
> twin, but he keeps on going when the traveling twin turns around.
> Obviously, he will continue to see the stationary twin continue to age
> slowly, contrary to what the traveling twin sees while turning around.
> 
> So Pentcho leaps to the absurd concept instead of the one that makes
> sense.  It figures!
> 
> Gary



I don't get it, are you saying it requires three observers?