Assumptions about radiometric dating
One possibility for the accelerated decay comes with the possibility of variable speed of light.Other theories simply hypothesize that during certain periods of time God sped up the process; these are called singularities in creation science.Other methods such as Potassium-argon dating and Isochron dating are based on faulty assumptions and so unreliable as to be useless.
Numerous fossils have been found in strata inconsistent with the evolutionary model of Earth's history.
If the date generated by isotope dating analysis agrees with the conventional interpretation of the geological column, paleontologists will accept it as valid.
A date that disagrees with that interpretation is dismissed as an anomaly.
For example, K-Ar dating assumes that there was no argon in the original rock.
But if there was argon in the rock when it originally formed, then the age calculated will be millions of years too high. The greater the amount of daughter isotope, the greater the apparent age.