Potassium 40 dating accuracy

I can think of several possibilities in response to this question: 2 & 3 seem easily falsifiable - anyone else could simply repeat the procedure and see if their results were the same.

If you're outside the range you won't get reliable results, but you can just use different isotopes that give good results in the desired range.Motivation for the question to follow: Some of the common mistakes we make in evaluating claims are resisting contrary evidence, looking for confirming evidence, and preferring available evidence.To counteract these tendencies, we need to take deliberate steps to examine critically even our most cherished claims, search for disconfirming evidence as well as confirming, and look beyond evidence that is merely the most striking or memorable.Unfortunately science is less formal than robotics.The converging lines of evidence for radiometric dating are outside the scope of this question.

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