They wrote, "Combining these observations implies a strong inter-connection between the seasonal and diurnal patterns.
This in turn again implies a mutual connection to the rotation of earth around its axis and its rotation around the sun." The radon decay rates accelerated during the daylight hours and during the summer.
The technique is based on measuring the ratio of two isotopes of carbon.
Carbon has an atomic number of 6, an atomic weight of 12.011, and has three isotopes: carbon-12, carbon-13, and carbon-14.
One of the implied assumptions in radiocarbon dating is that levels of atmospheric carbon-14 have remained constant over time.
This turns out not to be exactly true, and so there is an inherent error between a raw "radiocarbon date" and the true calendar date.
It can theoretically be used to date anything that was alive any time during the last 60,000 years or so, including charcoal from ancient fires, wood used in construction or tools, cloth, bones, seeds, and leather.
Since that time, investigators have yet to discover a satisfying physical mechanism explaining how the sun might accelerate the decay of radioactive atomic nuclei.
If this, or a similar factor, altered nuclear decay rates of the systems that are routinely used in rock dating, then any "age" determination provided by this method would have been compromised.
And this is exactly what the Institute for Creation Research's project Radioisotopes and the Age of the Earth (RATE) reported in 2005.
Such scars could only exist if the parent isotope's decay rate had been dramatically accelerated.
Nobody yet knows what (or who) accelerated nuclear decay in the past, just as nobody yet knows what mechanism causes the sun-related decay of silicon-32 or radon-222.