Text 743, 67 rader
Skriven 2004-11-10 17:26:00 av Tinyurl.Com/uh3t (1:278/230)
Ärende: Re: Metabolism Forced
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> From: tomhendricks474@cs.com (TomHendricks474)
> Where's the cells?

In my chemical-catalytic-loop scenerio for first replicator, evolution
doesn't produce the first cells until much later. The major use of a
cell is to hold all the different parts of the genome together with all
the auxillary tools such as proteins needed to work with them. When
there's only one replicator, which is a single small molecule, there's
no need to put in a bag with anything else. Another major use of a cell
is to protect the innerds from invasion by other lifeforms on the
outside. When there's only one replicator, there is no other lifeform,
so no need to protect against anything invading. So the first
replicator gets along just fine without a cell.

> There is only one realistic reason why anything would independently
> replicate outside of the environment pressure - we want it to happen
> in our scenarios - wish fulfillment.

That's not correct. The reason any particular chemical reaction happens
is because that's how the laws of nature work for that particular
starting configuration. If the starting configuration is a catalyst in
an environment such that it makes a second catalyst which makes a third
catalyst which makes the first catalyst again forming an infinite loop,
what makes it do that is that the laws of nature for those particular
chemicals happen to form such a closed loop.

> A fluke happens cause there is enough time for it.

Yes. If you have a handful of 50 coins, and you throw them up in the
air, what's the chance they will *all* land tails up? Not zero, just
some very small number close to zero, right? But if you do that same
experiment again and again and again and again, for billions of years,
eventually that freak event will happen, then if you keep going that
same freak event will happen again, etc.

> But that doesn't happen.

Why not? What's to prevent it?? If some freak event has only one chance
out of a billion of happening per experiment, and you do the experiment
ten billion times, what would prevent that freak event from happening
about ten times total??

>> The key fact we don't yet know is the statistics (per unit time) of
>> lengths of chains (of once-through fecundity greater than one) of
>> catalysts which spontaneously appeared in the pre-life oceans.
> This is the RNA world with one ribozyme.

No, I think it's very unlikely that the very first replicator would
happen to be a ribozyme. If you have some reason why you believe it'd
be RNA in any form whatsoever, please tell.

> Absolutely nothing is random.

About 80 years ago, some really intelligent theoretical physicists
figured out a theory called "Quantum Mechanics", and since then the
theory has been demonstrated as true. Have you ever heard of it?
Please read about it sometime, and them maybe you will stop saying
really stupid things like you did just then.
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