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An Unnoticed Crack in the Foundation:
Critical Presuppositions in Radiometric Dating.






Paul Gosselin (10/2/2026)

Here is a note I sent one of my sons who is finishing up a degree in aerospace engineering.

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Hi there,


While you may never have to take a university (propaganda) course dedicated solely to the theory of Evolution[1] (as I did), you cannot go through university anywhere without this issue coming up. Perhaps you are aware that I participate on a Young Earth Creationist (YEC for short) forum that has geologists, physicists, programmers and engineers. Many lively discussions...

Since these guys are YECs and believe the Earth is 6 to 10 thousand years old, the issue of radiometric dating comes up often enough as this is the basis for evolutionary claims such as “the Earth is 4-5 billion years old and that dinosaurs are millions of years old”. Clearly radiometric dating does not fit in the Biblical timeline. So what do you do with these claims? One response some Creationists have come up with is accelerated decay theory, basically claiming that in the past a cosmological event caused accelerated radiometric decay, despite the Earth being actually 6 to 10 thousand years old.

One participant in a discussion about radiometric dating responded that this method is built on assumptions and has been proven wrong many times when actual dates of rock formation are known (such when a recently formed volcanic rock is dated, typically the date is wildly wrong if the test lab is NOT informed where the rock was obtained...). All of which raises the question: Why must Young Earth Creationists try to fit a dating method that has be proven inaccurate into the Biblical time line? 

Below is a note I sent to the forum regarding a largely ignored issue in this debate.

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There is an underlying issue here regarding radiometric dating that needs to be addressed. In a typical lab experiment one can control and observe initial conditions. And the more we know about those initial conditions (and processes occurring during the experiment), the better our conclusions. Yet the radiometric dating system relies on what philosophers of science call a “metaphysical presupposition” that is idea that we can KNOW the initial conditions (millions of years ago...) in the rocks being dated by radiometric dating despite the fact that no human observer observed these conditions. Here’s the thing, if you strip away all the philosophical jargon, one can exchange the expression “metaphysical presupposition” for the simpler term “belief...

And if one REJECTS the belief that we KNOW the initial conditions in a rock being dated by radiometric dating systems, then you cannot even begin to date any rocks and all dates derived from said dating systems then become meaningless. All you have left is the actual empirical data about observable isotopes of certain minerals in rocks that we can see with our eyes and touch with our fingers. Of course there is HUGE pressure in geology to accept the belief that we can KNOW the initial conditions (millions of years ago...) in the rocks being dated by radiometric dating systems. It is true that the belief we can KNOW the initial conditions has seen methodological refinements over the years (lots of refined technical hand-waving about “calibration” and "isochrons"), but the basic fact remains that the initial conditions in the rock being dated were observed by NO HUMAN. The claim that we can KNOW the initial conditions in these rocks remains a BELIEF, nothing more.

And the significant issue is that a belief is something you can accept or reject.

This reminds me of an exchange I had in the early 80s with a Christian friend studying for an engineering degree in geology. I began discussing evidence for the Flood and issues that would reinterpret orthodox geological stratigraphy as evidence for the Flood. He became VERY agitated and emotional, perhaps having visions of being branded a “heretic” and his career in geology being flushed down the toilet should he begin to seriously look into such issues. This got to the point were he was threatening to cut me off should I pursue such discussions. So to avoid losing a friend, I avoided any further YEC discussions with him. This friend went on to get a comfortable government job and at this point is collecting a nice pension from this government job and all is well...

The point being of course that the pressure to bow to consensus in geology is REAL and should be taken in consideration, as well as the real threat to lose publication opportunities, a paycheck (or grants in geological research) should be weighed in considering the value of the consensus/dogma in geology about the claim we can KNOW the initial conditions in rocks. Very few geologists have the guts to stand up to the peer pressure of geological consensus and accept being labelled as a “crank” as did the American geologist Harlen Bretz who first proposed in the 1920s a theory that the Channelled Scablands in the US Northwest were formed by the Missoula Floods. Many years later, Bretz’ theory was accepted...

Regarding the belief in geology about the claim we can KNOW the initial conditions in rocks I am tempted to yell (as did William Wallace in BraveHeart) FREEDOM!! But I won’t do that...


A further note.
While one must keep in mind that REJECTING the "we know" presupposition regarding radiometric dating’s initial conditions would sow chaos in geology's contribution to the materialistic origins myth (also known as the Theory of Evolution), this would have NO influence on commercial geology.

Commercial geologists would not even notice a blip on the radar and would go on analysing cores for mineral content and still be able to determine if a mine could be opened or not and would still be able to analyse liquids retrieved from a petroleum exploratory drilling site to determine if there was enough oil to justify tapping an oil field. Ore samples from a mine would go on being analysed, providing facts with which to make decisions to keep a mine open or not.

All of these endeavours would proceed unaffected, even if the "we know" presupposition regarding radiometric dating were totally rejected. Real geology would not die. On the other hand, Evolutionary theory would be shaken to the core as neo-evolutionism (mutations and Natural Selection) is a stupid mechanism that is NOT driven by any Intelligent Agent, and thus DEMANDS millions of years to produce any results. Take away the millions of years then mutations and natural selection will produce NOTHING... The time needed would not be available... According to Evolutionary dogma, time is the pixy dust that makes the evolutionary miracle happen... Evolutionists have no choice but to believe in the we KNOW the initial conditions in rocks being dated dogma.

Years ago, the co-founder of Creationism, Henry M. Morris had given some thought to such issues in his Scientific Creationism (1974: 137-138)

For these or other methods of geochronometry, one should note carefully that the following assumptions must be made:

Morris’ second assumption (The system must initially have contained none of its daughter component) is misconstrued and unnecessary, simply because radiometric dating calculations can still begin if one assumes one KNOWS what quantities of all isotopes were present when the rock was formed. In the final analysis, if daughter components were present or not is irrelevant as no one observed the initial conditions of rock formation. No one measured the quantities of isotopes present at formation. The old computer programmer's motto applies here: “Garbage in, Garbage out...” This if the assumption regarding initial conditions in radiometric dating is GARBAGE, then all dates produced using this assumption will necessarily be GARBAGE as well...

I see two reasons why even YECs have not explored this issue.

David Coppedge once observed

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One of the participants in the forum made the objection that radiometric dates are not random but line up with stratigraphy.

To which I responded that this has no bearing on the issue that claiming to know the initial conditions of rocks being dated by radiometric dating systems. This response boils down to implying that geologists MUST believe the “we know the initial conditions” dogma. Yet this is a choice, to believe or not believe.

I got no further responses from Forum participants on this matter....

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Here is another point where a different “metaphysical presupposition” actually provides the FOUNDATION for Science itself.

And this is a point of contact between (natural) science and theology. It is actually a point where (natural) science is completely DEPENDANT on theology (specifically the Judeo-Christian worldview). That science is dependant on theology results from the fact that Scripture provide one critical point of dogma, that God made Creation lawlike, and is a reflection of a rational/personal God. This entails that the elements of the material world around us obey laws, and this belief made the experimental method possible. And it makes the exploration of space and cosmology possible (with limitations)

Here is an old article of mine that covers the basics.

The Judeo-Christian Cosmology and the Origins of Science.


References and further reading


Coppedge, David F. (2026) We Were Wrong About Isochrons, Geologists Say. (Creation-Evolution Headliens - January 24, 2026)

Morris, Henry M. (1974/1976) Scientific Creationism. Creation-Life Publishers San Diego CA  277 p.

Powell, Tim MD (2024) The Danger of Scientific Consensus - Evergreen Family Medicine. Evergreen Family Medicine -> Archive


On the Fear of Exclusion in Science

In a 1998 article, the philosopher Alvin Plantinga wrote (1998: 681-682)


Alvin Plantinga (1998) The philosophy of biology. edited by David L. Hull and Michael Ruse. chap 34 When Faith and Reason Clash: Evolution and the Bible. pp. 674-697 (First published in Christian Scholar's Review, 21 (1991): 8-32.

Kuhar, M.J. On Blacklisting in Science. Sci Eng Ethics 14, 301–303 (2008). https://doi.org/10.1007/s11948-008-9082-5


Notes

[1] - The prof who gave that Evolution course I had in the 1970s was a Communist. At the time he was a VERY zealous evolutionist as well as a devout Communist who, when he had the opportunity, would sermonize students to join the Communist Revolution against Capitalism. For some time I lost sight of him, but in the 90s, after the Fall of the Iron Curtain, he invited me to a class he was doing. I was surprised to observe that he’d defrocked from his hard-core atheism and was selling astral voyages and occult stuff to his students. He had become a shaman...