Received: by alpheratz.cpm.aca.mmu.ac.uk id IAA03135 (8.6.9/5.3[ref firstname.lastname@example.org] for cpm.aca.mmu.ac.uk from email@example.com); Mon, 28 Jan 2002 08:09:26 GMT Date: Mon, 28 Jan 2002 00:05:10 -0800 Message-Id: <200201280805.g0S85AY28643@mail21.bigmailbox.com> Content-Type: text/plain Content-Disposition: inline Content-Transfer-Encoding: binary X-Mailer: MIME-tools 4.104 (Entity 4.116) X-Originating-Ip: [184.108.40.206] From: "Joe Dees" <firstname.lastname@example.org> To: email@example.com Subject: Re: necessity of mental memes Sender: firstname.lastname@example.org Precedence: bulk Reply-To: email@example.com('binary' encoding is not supported, stored as-is)
>Date: Sun, 27 Jan 2002 05:41:28 +0000 (GMT)
> John Croft <firstname.lastname@example.org> Re: necessity of mental memes email@example.comReply-To: firstname.lastname@example.org
>John Dees wrote
>> The universe is a hypersphere whose center is
>> everywhere and whose periphery is nowhere.
>Unfortunately this is only true if the universe is
>closed (i.e. the force of gravity is stronger than the
>force of the explosion of the Big Bang). Because the
>closure has to occur in the 4th dimension (Time).
>This is what has been called the Einstein-de Sitter
>model of the Universe.
>An open model of the Universe is not a hypersphere (in
>which parallel lines eventually meet), but is rather a
>"saddle space" in which parallel lines diverge, and
>the universe expands forever. This is what is called
>the Friedman-Lamaitre model of the universe.
>Both simple models have been recently challenged by
>the recent findings concerning Supernovae. It appears
>that the cosmological constant (that Einstein
>originally included in his formulae to produce a
>static universe) may not have been a big error after
>all. In fact it appears that the spead of recession
>of the galaxies is beginning to accelerate. This
>would explain why we have some stars in clusters that
>are in fact older than a "smoothly decellerating
>parameter" for the Big Bang would suggest (after all
>stars that are older than the Big Bang should not
>exist). This finding would seem to indicate that the
>Universe is NOT a hypersphere, but rather "saddle
>space" (or hyperbolic), not spherical in nature.
>Hope this helps
So, rather than being riemannian, spacetime is lobatchevskeyan, and is represented not by the sphere, but by the hyperbola? One question; since the Big Bang was an instantaneous event, yet gravity continues to exert its influence over 'billions and billions' of years, even unto eternity if a Big Crunch is not achieved, how can it be that a finite explosion, however large, will not eventually be drawn 'back to ground' by a pull that can exercise itself for an infinite duration? Wouldn't it HAVE to be achieved eventually, just because of the power of (potentially) forever over even a vast finitude?
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This was distributed via the memetics list associated with the
Journal of Memetics - Evolutionary Models of Information Transmission
For information about the journal and the list (e.g. unsubscribing)
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