Re: OT: Astronomy - we are small

On Apr 18, 8:55 pm, Whisper <beaver...@xxxxxxxxxxxxxx> wrote:
TT wrote:
TT wrote:
robinson.n...@xxxxxxxxx wrote:
On 19 Apr, 00:53, TT <g...@xxxxxxxxxxxx> wrote:
robinson.n...@xxxxxxxxx wrote:
On 19 Apr, 00:20, TT <g...@xxxxxxxxxxxx> wrote:
robinson.n...@xxxxxxxxx wrote:
On 18 Apr, 23:08, TT <g...@xxxxxxxxxxxx> wrote:
I think your argument is like saying that if we flip a coin million
times we can't be sure that all wouldn't be "heads"...which is
of course
correct in theory but not in practise.
No, it is not the same because we know the probability of a coin
giving a head.
And we also know there are many many STARS and estimate the amount
as 70
sextillion (7 x 10^22) in the visible universe.
Yes we don't know P(life emerges on a
planet that can support life) ...But as I said, imo it's irrelevant
because of the huge numbers. We do know that it's is not zero since
there is life on Earth.
It is not irrelevant. If the probability is sufficiently low, even if
it is not zero, then it is perfectly feasible for us to be alone. This
is true for any estimate for the number of planets in the universe,
not matter how enormous....unless you consider an infinite universe
with infinite planets.
Yes I understand mathematical side of it. However I see no _reason_ to
assume that probability for life in correct conditions would be that
rare. It's all same matter.

I see no reason to assume it is that rare either,

Good

that has never been
my position. The difference between us is that I additionaly see no
reason to assume it isn't that rare. It is a complete unknown, as far
as I am concerned.

P.S. I don't think it's completely unknown...it's all same matter in the
universe as far as we know.

Correct.  Everywhere we look it's endless streams of galaxies all
obeying same laws of gravity.  There are other laws that would probably
equally apply everywhere - emergence of life, evolution etc - we just
can't 'see' these laws as readily as the effects of gravity.

Just curious, Whisper...
Do you read Talk.Origins by any chance?

Rodjk #613
.

Relevant Pages

  • Re: Is the Universe Fine Tuned for Life? 2
    ... rare elements in this Universe. ... extrasolar planets, all the SETI searches--`but we're not finding. ... "At a minimum of 1.9 Earth masses, ... SETI is looking for signs of *intelligent* life. ...
    (talk.origins)
  • Re: Time without end: Physics and Biology in an Open Universe
    ... I thought I was alone in my belief intelligent life could modify ... > the physical laws of the universe for its own purposes. ... > contradiction with the known laws of physics and information theory." ...
    (sci.bio.evolution)
  • Estimates of life in the universe
    ... I ran across some estimates of the prevalence of life in the universe. ... There are 300 billion stars in an average galaxy and 100 billion galaxies in the observable universe so the total number of stars is 10^21. ... 1 in a thousand of the planets in is large enough to hold an atmosphere ...
    (talk.origins)
  • Re: Atheists are the biggest fools on Earth
    ... universe is far beyond the trillions, ... so let's say that the fact that there is life on this planet shows ... that the planet is here by design. ... the fact that there is life on some planets. ...
    (talk.origins)
  • Re: Estimates of life in the universe
    ... There are 300 billion stars in an average galaxy and 100 billion galaxies in the observable universe so the total number of stars is 10^21. ... 1 in a thousand of the planets in is large enough to hold an atmosphere ... and concluded there should be at least 100 million planets capable of supporting life in the universe. ...
    (talk.origins)
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