|U.S. Army Corps of Engineers|
SPA Archaeologist Jeremy Decker records a piece of fire-cracked rock, one of a series of artifacts showing where prehistoric people built a hearth.
Also, the OCR method is calibrated with carbon-14, another dating method that requires many assumptions. But at least Frink points out difficulties in his process that need to be worked out instead of rushing in as a hero of science. So this, too, is not a reliable method to conjure up long ages for the sake of evolution.
MM from Australia asked about a new dating method called “oxidizable carbon ratio” (OCR) dating, which was brought to his attention by a friend.It is important to understand the simple, fundamental principle behind all dating methods, and why they are not able to produce objective, absolute dates (see article How dating methods work). The fatal flaw is that all scientific measurements are made in the present, whereas a date relates to a time in the past. We cannot go back into the past to measure all the parameters we need in order to do the dating calculation.
Unless you have a date tonight, you can finish reading by clicking on "Oxidizable Carbon Radio Dating".
Hence, all these parameters must be assumed—always. There is no other way. Further it must be assumed that the parameters have not varied over the ‘life’ of the sample. Because these are assumed, we cannot have any confidence that the calculated age is correct. Thus, scientists always compare their calculated result with what they think the answer should be. If their calculated age does not agree with expectations they will explain it away and look for something else to give them the age they need. The article How dating methods work gives one example of how unwanted dates are explained away. Radioactive dating anomalies gives other examples.