My claim that life (say the first living thing) had the attribute of SC is based on 4 premises
Wait, wait wait wait.....
We've gone from you claiming that you need to know whether or not a sequence of DNA is a gene or not before applying the filter, to tossing out pure speculation and dreamed up scenarios regarding things you cannot possibly have ANY knowledge of AT ALL?????
Can you people be consistent in your arguments for ONCE?
For the rest of this reply, I will basically be reiterating what Tag already wrote, but it is for reiteration/reinforcement purposes, because these claims are whack.
*in this context I define life as any organic thing that can reproduce
1 you need many (say a few hundred) amino acids (+ some other stuff)
How do you know? Sources please.
2 there are many different combinations allowed by the laws of nature, in which amino acids can exist.
Great insight...
3 these amino acids have to be organized in a very specific order in order to reproduce, (only 1 or few combinations would result in life)
How was this determined and by whom?
That life we know of
TODAY has specific needs does not dictate that the first living things had the exact same needs, so what is the evidence that this was always the case for the first living things?
4 there is no natural law that would “force” amono acids to organize in a convenient order.
How do you know?
You seem to be hinting at the 'all at once' thing - nobody has posited that a 'complete' living thing was the first living thing.
Whant an specific example?
YES.
In order to have life you need a long chain of left handed aminoacids (obviously you need much more than that, but let’s keep it simple) given that the ratio of left and right handed aminoacids tends to be 50/50 the vast majority of possible combinations would include at least some right handed aminoacid. And based on what we know to date, there is not a mechanism that would favor a pattern of just “left handed aminoacids” based on what we know nature favors a 50% 50% ratio.
Except for:
Chiral selection on inorganic crystalline surfaces
Abstract
From synthetic drugs to biodegradable plastics to the origin of life, the chiral selection of molecules presents both daunting challenges and significant opportunities in materials science. Among the most promising, yet little explored, avenues for chiral molecular discrimination is adsorption on chiral crystalline surfaces — periodic environments that can select, concentrate and possibly even organize molecules into polymers and other macromolecular structures. Here we review experimental and theoretical approaches to chiral selection on inorganic crystalline surfaces — research that is poised to open this new frontier in understanding and exploiting surface-molecule interactions.
Mineral Surfaces, Geochemical Complexities, and the Origins of Life
Abstract
Crystalline surfaces of common rock-forming minerals are likely to have played several important roles in life’s geochemical origins. Transition metal sulfides and oxides promote a variety of organic reactions, including nitrogen reduction, hydroformylation, amination, and Fischer-Tropsch-type synthesis. Fine-grained clay minerals and hydroxides facilitate lipid self-organization and condensation polymerization reactions, notably of RNA monomers. Surfaces of common rock-forming oxides, silicates, and carbonates select and concentrate specific amino acids, sugars, and other molecular species, while potentially enhancing their thermal stabilities. Chiral surfaces of these minerals also have been shown to separate left- and right-handed molecules. Thus, mineral surfaces may have contributed centrally to the linked prebiotic problems of containment and organization by promoting the transition from a dilute prebiotic “soup” to highly ordered local domains of key biomolecules.
If the first living things 'evolved' at mineral surfaces such as those mentioned, then it stands to reason that a particular chirality would be favored.
So the claim that left handed aminoacids chains have the attribute of SC is based on these 3 assumptions
1 there are many possible ways in which amino acids can form chains
2 of all the possible combinations, only a small minority would result in just left handed aminoacids
WRONG
You left out context. If the medium in/on which these reactions are occurring
favor the presence of one chirality over another, then why wouldn't those reactions
employ one chirality over another?
3 there is no bias in the natural laws that favors a chain of just left handed aminoacids.
See above.
This argument seems to be akin to the arguments of yore in which creationists insisted and just
knew that amino acids and nucleobases and such could ONLY arise via biotic synthesis.
Then they were found in meteorites.
And produced abiotically.
And produced in varied and many abiotic conditions.
At some point in the near future, creationists will have retreated to an even more 'reductionist' type of argument. Maybe arguing that carbon atoms cannot arise on earth naturally or something.
Note that at no point I need to know the potential origins of life,
It would have helped if you and your sources updated your archives now and then. Maybe then you wouldn't keep making out-of-date proclamations with such confidence.
You know, it took me about 30 seconds to find those articles above. You should keep this in mind the next time you set out to make a 'scientific' argument based on something you've read in a creationist book.
I don’t need to know who created life a priori,
I must have missed wherein you established that life HAD BEEN created.
and all these premises are perfectly testable, falsifiable and open to any new discoveries,
So...
Where were they tested?
I have been seeing similar assertions from creationists for decades. Never once have I seen a creationist since 2010 write:
"Hold on guys - this Hazen guy is finding that mineral clay surfaces adsorb organic molecules with chiral preferences... so maybe our whole 'CHIRALITY!!!' argument isn't as sound as we thought... Maybe tone it down?"
No no - all I see are the same proud assertions about:
"How does evolution explain THIS chirality stuff, huh? HUH??? God is amazing!!!"
And if you have any objection please clarify to me exactly what is it what you are objecting
1 that long left handed amino acids chains are not SC,
If you receive a royal flush in a poker hand, is that SC? What if you remove most of the cards from the deck that are not of a particular suit?
2 That they cant be created naturally despite being SC
Waiting for the tests on that - where are they?
3 you have life with any other ratio of right and left handed aminoacis?
This is from 2012 - does it count as a test?
Error - Cookies Turned Off
Unusual nonterrestrialL-proteinogenic amino acid excesses in the TagishLake meteorite
Abstract–The distribution and isotopic and enantiomeric compositions of amino acids found in three distinct fragments of the Tagish Lake C2-type carbonaceous chondrite were investigated via liquid chromatography with fluorescence detection and time-of-flight mass spectrometry and gas chromatography isotope ratio mass spectrometry. Large l-enantiomeric excesses (lee43–59%) of the a-hydrogen aspartic and glutamic amino acids were measured in Tagish Lake, whereas alanine, anothera-hydrogen protein amino acid, wasfound to be nearly racemic (dl) using both techniques. Carbon isotope measurements of d- and l-aspartic acid and d- and l-alanine in Tagish Lake fall well outside of the terrestrial range and indicate that the measured aspartic acid enantioenrichment is indigenous to the meteorite. Alternate explanations for the l-excesses of aspartic acid such as interference from other compounds present in the sample, analytical biases, or terrestrial amino acid contamination were investigated and rejected. These results can be explained by differences in the solid–solution phase behavior of aspartic acid, which can form conglomerate enantiopure solids during crystallization, and alanine, which can only form racemic crystals. Amplification of a small initial l-enantiomer excess during aqueous alteration on the meteorite parent body could have led to the large l-enrichments observed for aspartic acid and other conglomerate amino acids in Tagish Lake. The detection of nonterrestrial l-proteinogenic amino acid excesses in the Tagish Lake meteorite provides support for the hypothesis that significant enantiomeric enrichments for some amino acids could form by abiotic processes prior to the emergence of life.
I look forward to your presentation of creationist/IDcreationist scientific papers discovering or testing hypotheses of Creation or 'Intelligent Non-human Design", or "Deity Design".
But I suspect there will never be such things published, even in creationist journals.
PREDICTION - if Leroy replies, he will quote one sentence and go off on a tangent, ignoring the citations and debunking.