Re: Alien Life

From: Anthony Cerrato (tcerrato_at_optonline.net)
Date: 10/08/04 

Date: Fri, 8 Oct 2004 15:41:18 +0000 (UTC)

"Michael Ragland" <ragland37@webtv.net> wrote in message
news:ck580p$2qje$1@darwin.ediacara.org...
>
[snippage]

> Hi Tom:
>
> I think your question is interesting but it relies on what
is known as
> the "anthropic principle". In short, the anthropic
principle is a
> concept that states fundamentally that the Universe is the
way it is
> because if it were different we would not exist to pose
the question or
> that we see the universe the way it is because if it were
different we
> would not be here to observe it. The anthropic principle
has a tendency
> to believe if there are other life forms in the universe
they must be
> similar to us e.g. carbon based, etc. Darwinian evolution
is the
> evolutionary framework on earth but that doesn't
necessarily mean it is
> the evolutionary framework of other possible alien life
forms in the
> universe.

I think it's wrong to say the Anthropic Principle implies
the specifics you state--all it implies is that if the
universe were "different," it would differ in its
fundamental natural physical laws, and prime amongst these
are the values of the physical constants which define our
universe (e.g.; the value of e, the electric charge; the
fine structure constant; h, Planck's constant; G, the
gravitational constant; c, the speed of light; and the
unique masses of the elementary subatomic particles.) Since
it has been calculated that presumed fundamental laws in
theories such as Einstein's Thy. of General Relativity,
Quantum Electrodynamics, etc. indicate that the universe is
sensitively dependent on the exact values of the universal
physical constants, it leads to conclusions like, the
universe would either expand far too quickly, or so slowly
that it collapses quickly, or the forces between particles
would be too weak to hold matter together, and so on. Thus,
the universe would not have enough time or be able to
develop life itself, let alone, life as we know it.
Regards, ...tonyC

>
> Michael Ragland
>
> "It's uncertain whether intelligence has any long term
survival value.
> Bacteria do quite well without it."
> Stephen Hawking
>
>

Relevant Pages

  • Re: The Hidden Harmony of the Universe
    ... anything, that most values of the constants could not produce life, ... This is a big universe; ... But we don't know what happend yet, ... never be testable in principle, ...
    (talk.origins)
  • Re: OT: Many Worlds Probability Problem
    ... >>>believe that any set of values for physical constants would make ... >> that the universe will include a periodical titled "The Astrophysical ... DNA-based life, but also stars and planets, chemistry, and physics as ... Mark Isaak eciton earthlink net ...
    (talk.origins)
  • Re: Universes...ad infinitum
    ... it is that there is any universe that is fit for life to develop in. ... First if there are multiple universes with different physical constants or laws, then we have to insist on nothing more. ... Naturally, in any universe in which evolution can get a foothold, the life that evolves will match up very well to the parameters of that environment. ... Assuming multiple universes (with different physics) gets us around "explaining" the fact that the universe we live in has the right kind of physics for some kind of life to evolve in. ...
    (uk.philosophy.atheism)
  • Re: Universe: Fine Tuned For Life
    ... Anthropic Principle, that the particular values of the fundamental ... of course include Co, h-bar, G, e, particle masses, universe mass, ... universe somehow richer in structures and richer in evolving life ...
    (sci.astro)
  • Re: Universes...ad infinitum
    ... physical constants is to solve the metaphysical problem of how fortunate ... it is that there is any universe that is fit for life to develop in. ... Naturally, in any universe in which evolution can ... Assuming multiple universes (with different physics) gets us around ...
    (uk.philosophy.atheism)