@Dave Allen,
Dave Allen;96476 wrote:
Your opinion clearly varies, based on a fancy for Kant it seems.
No, my point of view does not vary. Thermodynamics is a particular of science, as are many other things. Evolutionary theory is a general theory, claiming to account for more than it actually does account for. I hold that the theory cannot be adequately explained and perhaps this is being unfair; for it is a complex process ... too complex to be defined by a simple formula. My understanding of it goes this far only: It states that simpler forms give rise to more complex forms through the processes of random mutations and natural selection. I don't disagree with this. I agree. You can't dismiss science. What I dismiss is the 'bloated' theory that evolution adequately answers all the questions. I don't think there is a serious evolutionist alive who would actually claim this, but I've heard as much from some people who think they understand the theory. In this regard, they are grounding their belief in the theory on faith, not on the evidence. I accept the evidence, and in as far as I cannot discount the evidence, I agree to the point that the evidence allows. This leaves me wanting. The 'why' is not a question for science. It's a question for philosophers. There is however, in some of the books in archaelogy that I've read, and that I appreciate, some speculation as to the underlying driving process of evolution, and at least the hint, that this question goes beyond the bounds of science. What I find repellent about some advocates who spout the theory of evolution as though it were a relition are absurd comments such as those from Richard Dawkins, that relegate human beings to mere machines who have no greater purpose in life than to be the mere transport machines for genes -the highest forms of life on Earth. The view is somewhat lopsided, and all because of a narrow and misguided viewpoint regarding evolution. When I see faith of any form in the guise of science, I reject it, just as adamantly as when I reject the misguided faith of Creationists claiming to prove the Earth is only 6,000 years old.
And my viewpoint on evolution has little to do with Kant. My rejection of evolution, in as far as it goes, is grounded upon what I see as faith, in the guise of science.
For an example of why I dismiss the theory read the following, quoted from Robert Shapiro's book 'Origins' [Bantam New Age Books, 1986] The section [pages 123-128] deals with the mathematical odds against the generation of life by random processes.
Shapiro uses a device to help us understand the odds. His device is a tower, called COSMEL. Each floor is a ten fold increase over each lower floor. He uses money as an example. Pennies are found on the first floor, dimes on the second, dollars on the third [it becomes progrossively harder to buy things the higher you go]. He uses atoms as an example as well.
"To get the components of life, we would have to climb higher up. On the first floor (10-99 atoms) we would find amino acids, nucleotides, and simple sugars. Most lipids would be available on the second floor, while enzymes and RNA molecules would be found on the third and fourth floors. If we wanted to obtain the DNA double helix which makes up the chromosome of a bacterium, we would have to climb to the eight floor, while a ribosome would be found slightly lower, on the seventh. The construction of an entire bacterium would require enough atoms to take us to the eleventh floor, while a trip up to the twenty-seventh floor would be needed to obtain a human being ...
"We are now ready to handle the chances for the spontaneous generation of a bacterium. Using the Tower of Numbers to estimate trials rather than pennies or atoms, we can put the 'mind-boggling' numbers on its proper level. For our purposes, we will want to overestimate and select the largest number of random trials that might have been attempted on the early earth, as the actual number would be very difficult to determine.
"We need to know two items, the length of time needed for a single trial and the number of trials that can take place simultaneously. Under the most favorable conditions, an E. coli colony can double in about twenty minutes. In other words, it takes twenty minutes for a bacterium to assemble a replica of itself from simple chemicals. It is unlikely that a bacterium would come together more quickly by random processes. Let us presume, however, that a simpler bacterium than E. coli is involved and estimate one minute as the time for the trial. If we accept the evidence of the fossils and the usual age cited for the solar system, then a maximum of 1 billion years, or 5 X 10 to the power of 14 minutes, was available for the origin of life on earth.
"What about available space? As a maximum estimate, we can assume that the earth was covered by an ocean 10 kilometers deep, which was available for experiments. Further, we will allow that space to be divided into small compartments (1 milcrometer on each side) of bacterial size. We would then have 5 times 10 to the power of 36 separate reaction flasks. If a separate try was made in each flask every minute for 1 billion years, we would have 2.5 times 10 to the power of 51 tries available. We would be on the fifty-first floor of the tower.
"That is a very large number, and we are probably several floors too high in our estimate, but we will use it, to continue the argument. Is it large enough to justify any event whatsoever ...?
"Many scientists have attempted such calculations; we need cite only two of them to make the point. The first was provided by Sir Fred Hoyle ... He and his colleague, N.C. Wickramasinghe, first endorsed spontaneous generation, then abruptly reversed their positions. Why did they do this? Quite obviously, they calculated the odds.
"Rather than estimate the chances for an entire bacterium, they considered only the set of functioning enzymes present in one. Their starting point was not a complex mixture, but rather the set of twenty L-form amino acids that are used to construct biological enzymes. If amino acids were selected at random from this set one at a time and arranged in order, what would be the chances that this process would produce an actual bacterial product? For a typical enzyme of 200 amino acids, the odds would be obtained by multiplying the probability for each amino acid, 1 in 20, together 200 times. The result, 1 in 20 to the power of 120, places us on floor 120 of the Tower of Numbers, immensely higher than the level where we find the number of trials.
"Things need not be that bad, however. What matters is the function of the enzyme, rather than the exact order of amino acids within it. A large number of amino acid sequences might provide enzymes with the proper function. With this in mind, Hoyle and Wickramasinghe estimated that the chances of obtaining an enzyme of the appropriate type at random were 'only' 1 in 10 to the power of 20. To duplicate a bacterium, however, one would have to assemble 2,000 different functioning enzymes. The odds against this event would be 1 in 10 to the power of 20 multiplied together 2,000 times, or 1 in 10 to the power of 40,000. This particular item would then be available on floor 40,0000 of the Tower of Numbers. If we consider that the number of trials brought us only to the fifty-first floor, we can understand why Hoyle changed his mind. His estimate of the likelihood of the event was that it was comparable to the chance that 'a tornado sweeping through a junk-yard might assemble a Boeing 747 from the materials therein.'
"In fact, things are much worse. A tidy set of twenty amino acids, all in the L-form, was not likely to be available on the early earth. This situation has not even been approached by the very best Miller-Urey experiments. Nor does a set of enzymes constitute a living bacterium. A more realistic estimate has been made by Harold Morowitz, a Yale University physicist. He has calculated the odds for the following case:
"Suppse we were to heat up a large batch of bacteria in a sealed container to several thousand degrees, so that every chemical bond within them was broken .... We then cooled this mixture slowly, in order to allow the atoms to form new bonds, until everything came to equilibrium. In this state, the most stable chemicals (those with the least energy) would dominate the mixture, while those with higher energy would be present to a lesser extent, in accordance with the laws of statistics. Morowitz asks, what fraction of the final product will consist of living bacteria? Or in other words, if a single bacterium was used to start the experiment (ensuring that the appropriate atoms, in proper amounts, were present) what would be the chances that a living bacterium would result in the end?
"The answer computed by Morowitz reduces the odds of Hoyle to utter insignificance: 1 chance in 10 to the power of 100,000,000,000. We are on the 100 billionth floor of our tower! This number is so large that to write it in conventional form we would require several hundred thousand blank books. We would enter '1' on the first page of the first book, and then fill in the rest of the book and the remainder of the books, with zeros. If, by some unimaginable method, we were to obtain enough trials to ascend in our tower to floor 99,999,960,000 then we would face 'only' the odds cited by Hoyle."
The question for those who think evolution can generate life is: How do they account in their thinking for such a defiance of the odds?
There are presently quite a few mathematicians using the same arguments to criticise the theory as fatally, if not critically flawed.
In short, the odds simply do not compute.
Why not accept any one of an abundance of alternative religious superstitions to account for the generation of life on earth?
Faith is faith.
And this is where I finally split off, and chosse Kant's method. He knew that the asnwers to the most difficult questions could only come from pure philosophical speculation, and left the ultimate questions to metaphysicians, but he asked for a different approach; and that's where my thinking (which has no room for blind faith, either in the guise of science, or religion) is directed.