@jeeprs,
jeeprs;72646 wrote:The argument that 'life will inevitably arise as an outcome of the interaction of forces and chemicals' is however not a scientific hypothesis in any sense of the word, it is simply wishful thinking.
No it isn't. The hypotheses of those who advocate Abiogenesis has a lot of evidence to support them, work with the chemicals available in pre-Cambrian rocks and the fossil evidence, and has even been duplicated in part in the laboratory.
The reason you feel secure in saying that it is "simply wishful thinking" is that you think arguments proposed by the Discovery Institute's propagandists are as valid, if not more so, than articles of scientific consensus that have passed peer review.
For example, the pundits you quote often refer to abiogenesis/evolution as a random process.
But no scientist who works with the theory and understands it claims that the process of natural selection is random. Of the three stage process one has a huge number of variables, but is not incalculable and subject to finite building blocks (the four nucleotides of RNA or DNA) assembled according to well understood chemistry.
STEP ONE: Organisms reproduce themselves (this is not random - it's tautological).
STEP TWO: The reproductions are not perfect - there is always variation (this is hugely variable - but not truely random).
STEP THREE: Some variations are better than others at surviving in the environment (not random - highly predictable).
But you can point this out to people from the Discovery Institute till you are blue in the face, and it won't sink in because they cannot cede part of the argument without losing the whole.
So when you say...
...it's a moot point, because chance comes into it no more than chance comes into any other natural process. Life did not develop by chance any more than rocks, elements or solar systems developed by chance - life developed by the
likely chemical reactions that take place within particular environments.
The second point often raised by the people you quote can hopefully be illustrated by the following diagram:
Let's call this
"The Single Step Fallacy". Lots of critics of abiogenesis like to
pretend that it's proponents think the first self-replicating organic proto-lifeform was a bacteria. In doing so they ignore the chemical processes that led up to that point - things which were not life - but were getting ever closer to the point of being labelled as such.
In fact - modern bacteria are one of the end results of the process, just like trees or humans or wasps. However, this fact does not stop creationists assuming that because bacteria are simplest form of life on Earth today acknowledged as such by scientists that there are not simpler "lifelike" forms that would be closer to the earliest self-replicating molecules than bacteria (for example, viruses, which are not technically living organisms - but provide an example of a halfway house between life and simple chemicals).
Quote:"Many proponents of the origin of life by chance do not bother to perform the mathematical calculations which render their conclusions highly improbable. Stephen C. Meyer calculates that to generate a single functional protein of 150 amino acids exceeds: "1 chance in 10 to the power of 180," and comments "it is extremely unlikely that a random search through all the possible amino acid sequences could generate even a single relatively short functional protein in the time available since the beginning of the universe..."
OK, the following video comprehensively debunks this assertion:
YouTube - How Abiogenesis Works
If you don't want to see it all at least watch from 5:00 onwards - it demonstrates how RNA forms, and how RNA spontaneously synthesises other complex chemicals due to it's very nature.
Quote: As Overman observes: "the difficulties in producing a protein from the mythical prebiotic soup are very large, but more difficult still is the probability of random processes producing the simplest living cell which represents an overwhelming increase in complexity".
Single step fallacy - no one in the field of abiogenesis claims a simple living cell was produced by
random processes from the prebiotic soup. Predictable chemical processes produce self-replicating molecules which, subject to natural selection (also predictable even if it's more complex) giving rise to self-replicators of increasing elegance and complexity. Combine these self-replicators with a lipid vesicle and you begin to have something that shares characteristics with cells and grows and divides and is subject to natural selection, but it still has a long way to go before being considered an actual cell.
Quote:David Swift comments: Biologists have become increasingly aware that the real stumbling block to the origin of life is its complexity - complexity in terms of the interdependence of molecules and biochemical pathways within cell metabolism, and complexity at the molecular level of individual components. The combination of complexities at these different levels presents insurmountable difficulties to getting anything that is remotely life-like...
This preamble is fairly good - perhaps he will go on to explain how evolution by natural selection will explain how something starting with low complexity might produce something of slightly greater complexity which may be favoured by the environment - become the norm, and then produce something of slightly greater complexity.
Let's see...
Quote:the complexity of even the simplest forms of life, a bacterium is much closer to a human being than it is to any cocktail of organic compounds in some putative primeval soup... the core of the problem is the considerable complexity of even the "simplest" forms of life, or even of some notional system that is stripped down to the theoretical bare necessities of life.
Ah, no - he goes on to make the
single step fallacy.
Quote:Fazale Rana and Hugh Ross report that: "Theoretical and experimental studies designed to discover the bare minimum number of gene products necessary for life all show significant agreement. Life seems to require between 250 and 350 different proteins to carry out its most basic operations."
In a bacterium - yes.
Single step fallacy.
Quote:The simplest existing self-reproducing organism known outside the laboratory is the bacterium Mycoplasma Genitalium, which has 482 genes (two thirds of which have been shown to be necessary to its survival in the laboratory). Outside of the laboratory Mycoplasma Genitalium is "unable to sustain itself without parasitizing on an even more complex organism... Therefore a hypothetical first cell that could sustain itself would have to be even more complex."
Firmicute bacteria are some of the simplest organisms we know of, and they live in environments such as the human gut.
It is a mistake to say they parasitise - they are largely beneficial to their host, being symbiotic - this is a tangental point but I make it to show the low degree of biological rigour these pundits routinely display.
However, another form of bacteria closely related to firmicutes live in self-sustaining populations known as Snottites. They just get the nutrient and energy they need from the environment directly in the right conditions. Here's a picture:
Now the basal* form of such bacteria as these snottite-dwellers and modern gut-dwellers obviously didn't live in animals - perhaps it lived in a self-sustaining community such as this (a hypothesis backed up by the fossil record) and modern firmicutes developed away from such a community (because they are gram-positive they lack an outer wall shared by many other bacteria species and therefore might benefit from the extra protection of living symbiotically with animals).
* Creationist scientists such as those from the Discovery Institute have to deny the possiblity of transitional forms as a rule anyway - because if they ceded that argument then biblical creation would be called into question as all life would not fit into the "kinds" mentioned in Genesis (which makes no mention of bacteria anyway - but creationists would have a hard time denying the existence of microbes, so they let this part of scientific discovery take a green light).
Quote:Rana and Ross argue: the minimum complexity for independent life must reside somewhere between about 500 and 1,500 gene products. So far, as scientists have continued their sequencing efforts, all microbial genomes that fall below 1,500 belong to parasites. Organisms capable of permanent independent existence require more gene products. A minimum genome size (for independent life) of 1,500 to 1,900 gene products comports with what geochemical and fossil evidence reveals about the complexity of Earth's first life.
Single Step fallacy again - Earth's earliest life need not have been as simple as the lifelike forms that led to it - such as things like viruses. And to repeat - just because the simplest bacteria alive today are parasitic (or symbiotic, by and large) it does not mean that their ancestors were.
Quote:Earliest life forms displayed metabolic complexity that included photosynthetic and chemoautotrophic processes, protein synthesis, the capacity to produce amino acids, nucleotides, fatty acids and sugars [as well as] the machinery to reproduce.
More single step stuff - viruses need none of this, and could have given rise to greater complexity.
Quote: Some 1,500 different gene products would seem the bare minimum to sustain this level of metabolic activity... neither enough matter nor enough time in the universe exist for even the simplest bacterium to emerge by undirected chemical and physical processes."
Single.
Step.
Fallacy.
The chemical processes that led to life may have been undirected - but they work under well understood predictable laws. They did not produce bacteria - bacteria are the end product of abiogenesis which produce simple self-replicators which evolved to the degree of complexity to count as "life" over a long process.
As for there not being "enough matter". Er, what? That's just a bald lie.
Quote:As for the 'Golidlocks Hypothesis', the facts of the argument are beyond dispute, it is the interpretation that is controversial.
The point is that the putative convenience of things is not an argument for supernatural agency in and of itself.
As Douglas Adams once said of the Goldilocks Hypothesis (I paraphrase) - "if you were a puddle that could think, you'd probably think life was arranged fro your convenience - isn't it great that there is water, isn't it great that this depression in the ground fits me so exactly."
Just because some degree of coincidence was required to produce us and our world - it doesn't mean there was no coincidence or that the coincidence need necessarily have been an astronomically unlikely one.
So the Goldilocks Hypothesis isn't debunked in order to show that evolution is right - it's dismissed in order to show that "parts of this planet are habitable for us and that prooves God" isn't a good arguement.
As an aside, my favourite proponent of Goldilocks is the Rabbi Boteach, who claims "if the day were just a little bit longer plants would be scorched to death!" He obviously hasn't much knowledge of how plants survive at the poles.
Quote:Scientists, or, should I say, those who for ideological reasons believe that Science should displace religion and philosophy as the final arbiter in the questions of morality and value (AS AN INTERJECTION: a tiny minority of scientists espouse this really, most think moral philosophy is a better arbiter of standards of behaviour than either religion or application of the scientific method - Dave), are naturally inclined to dismiss any religious or spiritual intuitions regarding the source and nature of creation.
I would say there is a much greater proportion of scientists willing to listen to and seek to understand the position of evangelicals than vice versa.
It's just a hunch, but then I reckon your opinion is also a hunch - I mean, look how misleading the opinions of the evangelicals you've referred to thusfar have been. They simply are either incapable or unwilling to get even the simplest facts about what scientists believe right - because their propaganda is better served by pretending that scientists actually propose that chemicals turned straight into modern species of bacteria "by accident".
Which is nothing but pure falsehood.
Quote:However surely from even the viewpoint of utility, it would be preferable to live believing that the Universe is a product of a grand design, and that we each have a part to play in it, than that everything just arises out of stupid matter by dumb luck and means nothing. After all, if one is correct in saying that, the grand prize is only nothingness which is kind of a hollow victory, I would have thought.
I don't think life's nothing - I think it's fascinating - I'd like to learn all I can about it really. I love natural history and zoology. I think theists need it dumbed down and can't appreciate it for itself. They'll only take their medicine if it comes with a bedtime story.
"Stupid" matter? How anthropocentric of you. If you NEED supernatural agency to justify your existence then by all means derive what comfort you can from it - but don't make some claim that the alternative is by necessity nihilistic, because it is not.
And, in defence of education, I would say that it is a very poor service the Discovery Institute do in spreading the misconceptions you yourself seem to have trusted in. These people cannot fight the theories of biologists without
lying - the single step fallacy and the fact that natural selection is far from random have been pointed out to them time and again - and they have to deny it because they would lose face and set a precedent for ceding ground to
real science if they began to do so.
Adn they domthis even though it's fundamentally dishonest to keep repeating these assertions once they have been explained away. I suppose bearing false witness is a good thing providing you are lying for Christ.
Also, from the point of utility - is one who knows how the world works through conclusions reached as a result of the rigorous testing of observable phenomena not better equipped to understand and deal with what the world throws at them than one who pertains to mythological and metaphorical explanations?
---------- Post added at 03:39 AM ---------- Previous post was at 03:19 AM ----------
Alan McDougall;72653 wrote:Thank you both for your comments, but does chance let such attributes below evolve out of nothing but elements and energy if you like?
Commitment
Generosity
Serenity
Courage
Peacefulness
Humor
Respect
Honesty
Power
Empathy
Fairness
Helpfulness
Independence
Interdependence
Loyalty
Patience
Pride
Resourcefulness
Intentionality (Motivation)
Openness
Well, all these traits are useful for social animals such as human beings to adopt in order to create bonds, find a mate, raise children, appreciate life and so on.
So whilst these traits are highly sophisticated and complicated mental mechanisms for helping us through our lives - because they
do help us through our lives they are consistent with the sorts of adaptations animals might develop through the theory of evolution by natural selection.
If you think about a human who lacked many of these traits it's easy to see how he or she might become isolated or incapable - and therefore unlikely to pass his or her genes down to the next generation.
---------- Post added at 03:47 AM ---------- Previous post was at 03:19 AM ----------
GoshisDead;72746 wrote:This is why I think analogies to emotion are used to describe the other argument like the "Goldilocks" argument comment, which before ever arguing from that skilled logician POV screams "the argument I am about to debunk is a fairy tale anyway and even though I might do a thourough job of debunking it, you really never needed me to, you know because i already labeled it fiction."
Well, I would hope that whatever subjective "distaste" the semantics engender wouldn't stop the actual idea being acknowledged.
Whatever you want to label the "just right" argument, it doesn't make the alternative (that coincidental factors might just produce life-sustaining environments and that the life forms would adapt to the environment via natural selection is a credible alternative to the idea that environments were designed for lifeforms which were also designed) a moot point.
Claiming "oh it's an emotional plea because the language used implies disparagement" - I think that's a somewhat emotional plea of it's own.
---------- Post added at 03:49 AM ---------- Previous post was at 03:19 AM ----------
Alan McDougall;72800 wrote:Life is really highly improbable, statistical arguments and the existence of life so shortly after the formation of primordial earth doesn't mix very well. This can be effectively by considering an extreme example: the spontaneous generation of a bacterium.
No theorist of abiogenesis claims bacteria spontaneously generated.
Single step fallacy again. Do people see how pervasive it is?
---------- Post added at 03:57 AM ---------- Previous post was at 03:19 AM ----------
GoshisDead;72826 wrote: Science is a method, it can't be neutral, it can't be not neutral, it has no agency. The percieved neutrality of science is the percieved neutrality of humans practicing science, which is as much propaganda as propaganda thrown out there by the religious, the politicians or any other group that espouses an ideal.
Sure science is subject to human bias - but no religious or political pundit has to go through peer review and struggle to gain the consensus of other religious leaders or politicians before they can speak with confidence about their own ideas and hypotheses.
Whereas those scientists who do want to maintain their reputations, and have their hypotheses reach the status of theory, do have to undertake peer review and demonstrate that their ideas actually have something relevent to say and appear to work.
So whilst all things beyond "you can doubt everything but the existence of a doubter" are in the realm of assumption - by sharing, testing and criticising their own ideas the scientific community hope, via their method, to reach towards to concrete consensus regarding observal phenomena of nature.
So it's not particularly genuine, I think, to suggest that they deal in the same sort of story-telling and PR spin that bedevils the worlds of politics and religion.
I'm not saying that there aren't corrupt and manipulative scientists out there - but I think you're unecessarily smearing the gestalt.