The probability of life, page 3
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reply posted on 31-7-2011 @ 05:22 AM by TheWalkingFox
reply to post by addygrace



Allow me to give this a try.

No, we have not observed life coming from non-life. There are two reasons for this.

One, we live on a world that happens to have life. Life forms tend to consume the proteins, chemicals, and other assorted tiny flotsams that would conceivably give rise to life. Think of how we metabolize iron before it can turn into an iron crystal or something. Short version, living organisms just eat everything that could possibly give rise to life. Sterile experimentation is hobbled first by the tremendously limited scope of a laboratory vs. what was going on on an entire planet four billion years ago, second by the fact that sterility is imperfect; all it would take is one single bacteria getting in the experiments to completely screw them up beyond all use.

Now, if we were to run massive experiments on abiogenesis on, say, the moon, we might get somewhere. Running htem on earth is a lot like trying to wash clothes in a mud puddle.

The second is, well, a little more esoteric. Where does non-life end, and life begin? What's the narrow line between the two states? There's actually a grey area there, with crystals at the "more like non-life" end of the grey and viruses at the "more like life" end - it's really a rather arbitrary distinction. There's room for "maybe" between yes and no.
edit on 31/7/2011 by TheWalkingFox because: (no reason given)



reply posted on 2-8-2011 @ 02:04 AM by Akasirus
Originally posted by novastrike81
reply to
post by Griffo



I find the study interesting, but when Creationists throw out the probability of life to be 10^390; I like to throw out that "we're here, so it must be probable."

Highly improbable situations happen all the time, like people winning the lottery. Why should the formation of life on Earth or elsewhere in the Universe be treated any differently?
edit on 27-7-2011 by novastrike81 because: (no reason given)


But this kind of just hand waves the problem away. Imagine for a moment you are sentenced to death by a firing squad of 40. You stand their, blindfolded, and hear 40 shots go off, yet you are still standing, thinking "My god, what are the chances every shot would miss?" You wouldn't just say "Well I am standing here, so of course they must have all missed" and leave it at that, would you?

To me that isn't a very satisfactory answer, though perhaps it's the best we'll get. In the end you will either have to accept that the universe is just perfect because it was designed that way, or it's just perfect because if it wasn't we wouldn't be here. I doubt that will stop us from looking for a better answer though.

On a similar note, what many of these 'calculations' fail to take into account is that we are not looking for the probability that life similar to ours would develop. We are looking for the probability that life at all would develop. Similar to how the odds of 2 people in a room sharing a birthday are much greater than the odds of someone else in the room sharing your birthday.

Put another way, if we were a form of life who had evolved in high gravity, able to withstand high temperatures, and arsenic in the atmosphere, I imagine we'd all be thinking "Wow, what are the odds that on a planet with just this amount of gravity, the temperature would be exactly right, and the atmosphere would have just enough arsenic to support us?"


reply posted on 2-8-2011 @ 02:33 AM by Akasirus
reply to post by addygrace



Addygrace, the problem here is that God creating life wouldn't actually solve anything. Instead of answering the question of the origin of life, it just shifts the question to the origin of God, and creates a thousand new questions.

So while abiogenesis is not a fact, I feel it is a valid explanation because it fits within our current understanding, and would actually answer the question we are asking.

God creating life is certainly a possibility, but that conclusion requires hundreds of other unknown variables to also be true.

Abiogenesis is falsifiable with this simple hypothesis: "if life is eternal, abiogenesis cannot be true"
Corollary to that: "If there was ever a period in the universe without life, abiogenesis must be true"

Prove that life has always existed, and you will prove that life has always come from life. However, if there was ever a point the universe was void of life, then life must have come from non-life, it's as simple as that. Abiogenesis doesn't necessarily detail the process of how that happened, nor does it have to.

But don't take it so personally, abiogenesis doesn't disprove God, they can coexist. God, omnipotent and all knowing, couldn't have planted the seeds for the conditions to be just right to form life? Actually it seems to me that the bible advocates abiogenesis, as Adam came from the earth, and God is not life in this universe as we would define it. It seems to me like you are arguing against abiogenesis as if it's an attack on your faith, and it's certainly not.


reply posted on 3-8-2011 @ 04:45 AM by Astyanax
reply to post by addygrace


Saying science will explain that life began from non-life is a very big claim.

It’s not a claim at all. As Maslo pointed out earlier, it’s an observation from fact. At some point life began on Earth, which was sterile before. And life still comes from non-life; we are still made of the same common, nonliving elements as the rest of the Earth.

If you don’t want to believe the science, well, don’t. Just go and look in your Bible: Genesis 1:2

It may have taken the intervention of a third party, as you insist, to make it happen, but it happened just the same. Life came from non-life. It can hardly have done otherwise.

So for abiogensis to be true it has to falsify this phenomenon that's been observed millions of times.

That’s not what ‘falsify’ means. A phenomenon is an object or an event; you cannot falsify one. It is scientific theories that are, and must be, falsifiable.

There is no theory of abiogenesis. There is a conjecture or hypothesis of abiogenesis, which, as you correctly point out, is unfalsifiable. It is unfalsifiable because we do not have, and cannot obtain, observational or experimental data to falsify it with. Scientists are aware of this, which is why they do not present abiogenesis as a true explanation of the origins of life, only as a likely one. To one who does not have a vested interest in denying it, the current hypothesis with respect to abiogenesis does, indeed, seem quite likely.


reply posted on 3-8-2011 @ 08:31 PM by novastrike81
reply to post by DaveNorris



Go to Tools at the top and you'll see messages to the far left of the options that come up. Click that and you'll have the option to send and view u2u's.

To answer your OT question, you can find anything on the internet; and I mean ANYTHING!
edit on 3-8-2011 by novastrike81 because: (no reason given)

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