On Tuesday, May 23, 2023 at 2:01:48 PM UTC-4, Öö Tiib wrote:
> On Tuesday, 23 May 2023 at 16:06:46 UTC+3,
peter2...@gmail.com wrote:
> > On Monday, May 22, 2023 at 5:00:29 PM UTC-4, Glenn wrote:
> > > On Monday, May 22, 2023 at 11:42:35 AM UTC-7, Lawyer Daggett wrote:
> > > > On Monday, May 22, 2023 at 2:30:29 PM UTC-4, Glenn wrote:
> > > > > On Monday, May 22, 2023 at 11:02:31 AM UTC-7, John Harshman wrote:
> > > > > > On 5/22/23 10:25 AM,
peter2...@gmail.com wrote:
> > > > > > > On Monday, May 22, 2023 at 11:10:34 AM UTC-4, Kalkidas wrote:
> > > > > > >> LOL. Live-action talk.origins.
> > > > > > >
> > > > > > > There is also a great deal of talk.origins style debate in the comments section for that video.
> > > > > > > Some of it, notably by Javier Campos Gómez and Anthony Polonkay, is superior
> > > > > > > to what you see above. You can read what they wrote in some of the 65 comments following the displayed one by Javier
> > > > > > > at the beginning of the comments section (at least, that's where it appears in my display).
> > Minor update: it is second as of this writing, and I've seen it in fourth place in the meantime.
> > Not sure what influences the placement.
> > > > > > > I've contributed 7 of those comments myself, all of them near the end of the 65 as of this writing.
> > It's now up to 144 comments. So the comments I made yesterday are closer to the middle,
> > and I'll be making some more today.
> > > > > > >
> > > > > > > My most penetrating comment so far is in the following exchange:
> > > > > > >
> > > > > > > ________________________________________
> > > > > > >
> > > > > > > Jinnantonix, replying to Andrew Polonkay, had written:
> > > > > > >
> > > > > > > "Unfortunately you have not made the case for why a proto life chemical process would require "an inwards facing membrane" or "gates". These are only requirements that we see in living cells, and these early lipid membranes predate that by at least 500 million years. The argument that these structures have to appear in their existing complex arrangements right from the very beginning is the same as the creationist/anti-evolution argument that it is impossible for the human eye, with all its complexity, to spontaneously come into existence. ie Nonsense. Since we know that life evolves from the simplest chemical processes, over aeons, toward these more complex structures that become ubiquitous only through their superiority in natural selection."
> > > > > > >
> > > > > > > My response went:
> > > > > > > Natural selection only begins with organisms with the sophistication of the simplest free-living prokaryotes. We do NOT know about the processes that intervene between the simple production of amino acids and nucleotides -- all that origin-of-life experiments have been able to produce to date -- and such organisms. You are knocking down a strawman creationism mixed with rank speculation about "life as we don't know it."
> > > > > > But is that true? Natural selection begins when its requirements are
> > > > > > present: reproduction, inheritance with variation, and differences in
> > > > > > fitness among variants. What makes you think that something simpler than
> > > > > > any current organism could not have those characteristics?
> > > >
> > > > > Your "think" to Peter's "know" seems to sink the last nail in your
> > > > > coffin. Answer your own question with science, monkey boy.
> >
> > Mr. Tiib does not seem to have caught on to what the two words in quotes are all about.
> > It's one of the drawbacks of GG hiding earlier text until you click on the three dots.
> Me? I was not posting in that sub-thread, it was you, Glenn and John Harshman.
Thanks for setting me straight. I'll work harder at keeping track of sub-threads.
> What we have is stack of partially to fully incompatible hypotheses and then even
> bigger stack of potential possible stages of proto-life.
The stack of hypotheses I've seen here in t.o. are on a very rudimentary level:
warm dilute planetwide "soup," hot sea vents, cool sea vents, etc.
> It is hard to estimate
> what of such dim stages can survive nothing to talk to evolve and to what extent.
Did you see my direct reply to you on the 23rd? You haven't answered it yet,
and that is where I last talked about stages that had to take place
on the way to life as we know it.
I marked them by essential ingredients that had to develop somehow:
they had to be enzymes that were not of protein, but of long strings
of nucleotides, called ribozymes. The best known of the ones we still
have are ribosomes, and without them there is no reproduction, not
even of viruses. But we also need some we haven't found:
ribozyme RNA polymerase, ribozyme reverse transcriptase,
ribozyme DNA polymerase, ribozyme transcriptase.
I believe they evolved in the above order, with the first one a near certainty.
The second is essential for building DNA from RNA, the third for replicating
existing DNA, and the fourth to replenish RNA from all that is perpetually
converted into DNA via reverse transcriptase.
Once these are all in place, we have a life form that probably
existed in the early earth. It's possible that there are life forms
like that in exoplanets elsewhere in our galaxy, and it is a fascinating
question whether they can evolve to intelligent life without ever
developing protein enzymes.
Ours did develop them, and that development involves a formidable set of hurdles
on the way to life as we know it. Are you familiar with the protein translation mechanism?
> And not lot of people care. Average person: "wtf, something happened 3.8 bya?"
Average sophisticated atheist: "we know that life evolves from the simplest
chemical processes, over aeons [without intelligent intervention]." The
part outside the brackets is by Jinnatonix, see above.
> There sure are some for whom it is very interesting and so some experiments will
> be done. But expectations of anyone to have resources for modeling it nothing to
> talk of actual experimenting with vast populations of actual potential proto-lifes in
> various real conditions for sufficiently long time should be trimmed down.
Or stretched over thousands of years at the present rate of development.
I went into that possibility in my direct reply to you:
https://groups.google.com/g/talk.origins/c/khZM_6plMSc/m/xL7n3jtqAQAJ
Re: Clueless
May 23, 2023, 9:57:41 AM
> Problems:
> * hard to show positive technological impact, hard to find funding;
Yes, there is too much complacency, "Why fund work to prove something
that we've known all along" -- see the words of the sophisticated atheist.
> * simulations of simple procaryotes are far more cheap than real experiments;
I would have put "proto-prokaryotes" in place of "procaryotes". See possibility above.
> * hypothetical proto-life is hard to model or to construct;
It is theoretically possible to remove all DNA from cells that translates to protein enzymes
and to find the appropriate ribozymes. But unless we find viruses or cells
that contain these, it will require an enormous amount of research
to discover them.
> * various potential conditions 3.8 bya are also hard to model or achieve;
And we may be guessing wrong about what they were. Urey and Miller
guessed early earth had a reducing atmosphere, but planetary scientists
favor a neutral atmosphere which makes the prebiotic production of
amino acids much more difficult.
> * Complexity of our technological ambitions is often far above whatever
> simplest procaryote can provide;
"above"? What do you mean?
> * Evolvable technologies are tediously slow in contest with trainable technologies;
I don't understand what you mean here either.
> * whatever models will be likely rejected anyway as "fake garbage with goals
> of social engineering" (or such).
Easily dismissed, because nobody gives rational reasons for saying this AFAIK.
Peter Nyikos
Professor, Dept. of Mathematics -- standard disclaimer--
University of So. Carolina in Columbia
http://people.math.sc.edu/nyikos