The following is a statement loaded with half-truths, falsehoods, and outright distortions of truth and fact; a real disservice to both religion and science.
Sender wrote:The billions of years claimed today are based almost exclusively upon the radiometric dating techniques. Very briefly, these depend upon unstable isotopes of certain elements that break down spontaneously at known rates to become stable elements. By measuring the ratio of unstable (radioactive) element to stable element (daughter product) and knowing the rate of decay, the age can be determined. Except for Carbon 14 that gives ages of less than about 50,000 years, all the other radiometric methods give ages in millions of years. With all the assumptions and uncertainty of these methods and the inability to calibrate, it might well be suspected that the only reason these methods are employed at all is because they provide the long ages expected! Among the difficulties is the fact that the rates of decay have been measured since about 1927 and, while they seem to have been constant since that time, it is assumed that these rates have been constant for billions of years. This is extrapolation on the truly grand scale. Supernova explosions for example, are known to affect the rates of decay. It is also assumed that the initial conditions included no daughter products; how can we know? Finally, no scientific measurement is possible without some means of calibration against samples of known age. This can be done in the case of the Carbon 14 method for the past three thousand years using say, dated wooden casket lids. The method goes badly off beyond this range of calibration. However, for the other radiometric methods there is nothing of known age beyond a few thousand years so that there can be no calibration. Textbooks will often lead readers to believe that science has established the age of every rock stratum and fossil radiometrically. The fact is, the radiometric dates must conform to the fossil dates before being accepted while the fossil dates are based upon assumptions made in the 19th century about sedimentation rates. Those same textbooks fail to mention all the assumptions or the calibration problem.
-- TFE Publishing, 33 Ontario St., Suite 112, Kingston, ON. K7L 5E3
1.
Except for Carbon 14 that gives ages of less than about 50,000 years, all the other radiometric methods give ages in millions of years.
False. Dr. Roger C. Wiens states “beryllium-7 is not used for dating rocks, as it has a half-life of only 54 days.” See “Radiometric Dating: A Christian Perspective.”
See
http://www.asa3.org/asa/resources/wiens.html
2.
With all the assumptions and uncertainty of these methods and the inability to calibrate, it might well be suspected that the only reason these methods are employed at all is because they provide the long ages expected!
False. There are many reliable methods to calibrate the decay rates, contrary to the Creationist claims.
See
http://www.asa3.org/asa/resources/wiens.html
3.
Among the difficulties is the fact that the rates of decay have been measured since about 1927 and, while they seem to have been constant since that time, it is assumed that these rates have been constant for billions of years. This is extrapolation on the truly grand scale. Supernova explosions for example, are known to affect the rates of decay.
False. The conditions taking place inside a supernova have no relevance whatsoever to the rocks and their radioactive decay rates taken from within our Solar System. The conditions that apply within a supernova do not apply to the conditions of our Solar System. The argument is an irrelevant half-truth, the other half being no supernova reset the radioactive clock of the rocks within our Solar System. See Wiens’ below on how “Doubters Still Try” to distort the facts and truth with half-truths such as the statement above.
4.
It is also assumed that the initial conditions included no daughter products; how can we know?
False. Wiens address this point specifically:
Wiens wrote: 11. There is little or no way to tell how much of the decay product, that is, the daughter isotope was originally in the rock, leading to anomalously old ages.
A good part of this article is devoted to explaining how one can tell how much of a given element or isotope was originally present. Usually it involves using more than one sample from a given rock. It is done by comparing the ratios of parent and daughter isotopes relative to a stable isotope for samples with different relative amounts of the parent isotope. For example, in the rubidium-strontium method one compares rubidium-87/strontium-86 to strontium-87/strontium-86 for different minerals. From this one can determine how much of the daughter isotope would be present if there had been no parent isotope. This is the same as the initial amount (it would not change if there were no parent isotope to decay). … While this is not absolutely 100% foolproof, comparison of several dating methods will always show whether the given date is reliable.
5.
[N]o scientific measurement is possible without some means of calibration against samples of known age. This can be done in the case of the Carbon 14 method for the past three thousand years using say, dated wooden casket lids. The method goes badly off beyond this range of calibration. However, for the other radiometric methods there is nothing of known age beyond a few thousand years so that there can be no calibration..
False. Same as #2 above. Wien adequately addresses this issue and shows it to once again be false and a distortion of truth via the use of half-truths and outright falsehoods.
See
http://www.asa3.org/asa/resources/wiens.html
Wiens wrote: Doubters Still Try
Some doubters have tried to dismiss geologic dating with a sleight of hand by saying that no rocks are completely closed systems (that is, that no rocks are so isolated from their surroundings that they have not lost or gained some of the isotopes used for dating). Speaking from an extreme technical viewpoint this might be true--perhaps 1 atom out of 1,000,000,000,000 of a certain isotope has leaked out of nearly all rocks, but such a change would make an immeasurably small change in the result. The real question to ask is, "is the rock sufficiently close to a closed system that the results will be same as a really closed system?" Since the early 1960s many books have been written on this subject. These books detail experiments showing, for a given dating system, which minerals work all of the time, which minerals work under some certain conditions, and which minerals are likely to lose atoms and give incorrect results. Understanding these conditions is part of the science of geology. Geologists are careful to use the most reliable methods whenever possible, and as discussed above, to test for agreement between different methods.
Some people have tried to defend a young Earth position by saying that the half-lives of radionuclides can in fact be changed, and that this can be done by certain little-understood particles such as neutrinos, muons, or cosmic rays. This is stretching it. While certain particles can cause nuclear changes, they do not change the half-lives. The nuclear changes are well understood and are nearly always very minor in rocks. In fact the main nuclear changes in rocks are the very radioactive decays we are talking about.
There are only three quite technical instances where a half-life changes, and these do not affect the dating methods we have discussed.
1. Only one technical exception occurs under terrestrial conditions, and this is not for an isotope used for dating. According to theory, electron-capture is the most likely type of decay to show changes with pressure or chemical combination, and this should be most pronounced for very light elements. The artificially-produced isotope, beryllium-7 has been shown to change by up to 1.5%, depending on its chemical environment (Earth Planet. Sci. Lett. 171, 325-328, 1999; see also Earth Planet. Sci. Lett. 195, 131-139, 2002). In another experiment, a half-life change of a small fraction of a percent was detected when beryllium-7 was subjected to 270,000 atmospheres of pressure, equivalent to depths greater than 450 miles inside the Earth (Science 181, 1163-1164, 1973). All known rocks, with the possible exception of diamonds, are from much shallower depths. In fact, beryllium-7 is not used for dating rocks, as it has a half-life of only 54 days, and heavier atoms are even less subject to these minute changes, so the dates of rocks made by electron-capture decays would only be off by at most a few hundredths of a percent.
2. Physical conditions at the center of stars or for cosmic rays differ very greatly from anything experienced in rocks on or in the Earth. Yet, self-proclaimed "experts" often confuse these conditions. Cosmic rays are very, very high-energy atomic nuclei flying through space. The electron-capture decay mentioned above does not take place in cosmic rays until they slow down. This is because the fast-moving cosmic ray nuclei do not have electrons surrounding them, which are necessary for this form of decay. Another case is material inside of stars, which is in a plasma state where electrons are not bound to atoms. In the extremely hot stellar environment, a completely different kind of decay can occur. ' Bound-state beta decay' occurs when the nucleus emits an electron into a bound electronic state close to the nucleus. This has been observed for dysprosium-163 and rhenium-187 under very specialized conditions simulating the interior of stars (Phys. Rev. Lett., 69, 2164-2167; Phys. Rev. Lett., 77, 5190-5193, 1996). All normal matter, such as everything on Earth, the Moon, meteorites, etc. has electrons in normal positions, so these instances never apply to rocks, or anything colder than several hundred thousand degrees.
As an example of incorrect application of these conditions to dating, one young-Earth proponent suggested that God used plasma conditions when He created the Earth a few thousand years ago. This writer suggested that the rapid decay rate of rhenium under extreme plasma conditions might explain why rocks give very old ages instead of a young-Earth age. This writer neglected a number of things, including: a) plasmas only affect a few of the dating methods. More importantly, b) rocks and hot gaseous plasmas are completely incompatible forms of matter! The material would have to revert back from the plasma state before it could form rocks. In such a scenario, as the rocks cooled and hardened, their ages would be completely reset to zero as described in previous sections. If this person's scenario were correct, instead of showing old ages, all the rocks should show a uniform ~4,000 year age of creation. That is obviously not what is observed.
3. The last case also involves very fast-moving matter. It has been demonstrated by atomic clocks in very fast spacecraft. These atomic clocks slow down very slightly (only a second or so per year) as predicted by Einstein's theory of relativity. No rocks in our solar system are going fast enough to make a noticeable change in their dates.
These cases are very specialized, and all are well understood. None of these cases alter the dates of rocks either on Earth or other planets in the solar system. The conclusion once again is that half-lives are completely reliable in every context for the dating of rocks on Earth and even on other planets. The Earth and all creation appears to be very ancient.
The fact that the Earth is approximately 4.5 billion years old raises no problem for enlightened religionists, regardless of the tradition (Buddhist, Christian, Muslim, etc.) they happen to belong to. Neither does the fact of evolution prove on deeper examination to be incompatible with religious faith. Organic evolution is a fact; the phylogenetic path(s) of evolution are open to modification based upon new scientific evidence from the diverse fields of paleontology, molecular biology, etc.; the causal mechanisms of evolution and source of novelty and new forms, is also open to modification based upon our enlarging understanding of such fields as molecular biology and developmental biology, which are even now uncovering new understandings of the causal mechanisms underlying the evolution of new forms in time. Neither the
fact, the
path(s), nor the
mechanism(s) of evolution prove to be problematic for those who's primary loyalty is truth on all its levels, including those facts and truths uncovered by true science.
In their pursuit of fundamentalist ideology based upon a literalistic interpretation of the Bible apparently the truth doesn't matter much to creationists as evidenced by their arguments for a young earth. It is ironic indeed, that creationists who claim to follow Jesus, resort so frequently and easily to fallacious arguments based upon half-truths and falsehoods. Perhaps they ought to take the Master's advice and head his words that "the truth shall set you free," and try remaining loyal to truth on all its levels, scientific, philosophical, and spiritual, instead of sacrificing truth to narrow dogmatic fundamentalist anti-intellectual ideologies.
* * *
Patterson, Colin et al. (1998) Creationism and common sense. (letter to the editor)
Nature, April 14, v332 n6165, p580(1).
wrote:If you wish to disagree with Darwin, it is important to know what aspect of Darwin's thinking, and more importantly of modern evolutionary theory, you are disputing. Many opponents of Darwinism seem to think that because one disagrees with, say, the role of natural selection in evolution, that one automatically disagrees with the idea of evolution itself. Creationists especially seem to slide from "disagrees with some aspect of synthetic Darwinism" to "rejects evolution". One of the more dishonest versions of this tactic lies in the use of comments made in one context (for example, Colin Patterson's talk on the relevance of cladistic methods to reconstruct evolutionary trees in the Symposia on Systematics at the American Museum of Natural History) in an entirely different context (the supposed rejection by Patterson of Darwinism in total, despite his having written a book on evolution accepting Darwinian theory [1], see Patterson Misquoted: A Tale of Two 'Cites' FAQ) [See:
http://www.talkorigins.org/faqs/patterson.html].
[1] Patterson 1979 Evolution
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http://www.talkorigins.org/faqs/anti-darwin.html