When today’s rates are used to calculate ages from certain radioisotope ratios, the results indicate that billions of years’ worth of nuclear decay of the heavier radioisotopes has occurred.But there is evidence that this decay occurred in accelerated “spurts,” Why the High Radiocarbon Age Estimates?And a radiocarbon result that contradicts old-earth dogma is not a good enough reason by itself to invoke contamination!Assumptions…Assumptions Instead of arbitrarily blaming these anomalous results on contamination, a far better (and more scientific) approach would be to question the correctness of the assumptions behind radioisotope dating methods.We find that about 18 such halvings are required for the p MC value to drop below 0.001 (Figures 1 and 2).(We could “round up” the value of 0.0007 p MC at 17 half-lives to 0.001 p MC, but the 0.00038 p MC at 18 half-lives is definitely below the detection threshold.) Since each half-life is 5,730 years, this means that no C has even been detected in diamonds, which some scientists claim are billions of years old!Second, such large calculated ages are based on the C/C ratio has remained unchanged for tens of thousands of years.A global flood like the one described in the Bible would invalidate this assumption.
About nine half-lives would have to elapse for a starting value of 100 p MC to decrease to 0.2 p MC.
One of these assumptions is that nuclear decay rates have always been constant.