RE: The End Of Reason: A Glimpse Behind The Curve

Carbon dating has a limitation in how many years back it can date

EDIT: Because the half-life of carbon-14 is 5,700 years, it is only reliable for dating objects up to about 60,000 years old. However, the principle of carbon-14 dating applies to other isotopes as well. Potassium-40 is another radioactive element naturally found in your body and has a half-life of 1.3 billion years. Other useful radioisotopes for radioactive dating include Uranium -235 (half-life = 704 million years), Uranium -238 (half-life = 4.5 billion years), Thorium-232 (half-life = 14 billion years) and Rubidium-87 (half-life = 49 billion years).

There are many examples of how people bring in something to be dated, something that is only a few decades or centuries old in many cases, in most cases.

Maybe the simple explanation for those cases is that the samples where contaminated?

When dating things, it's important to understand the rate of decay that certain elements may have in the present. Now, in the past, however, things may have been different

Are you saying that the laws of physics were different in the past? If this is the case are there any studies that make this case for isotope dating (not just carbon dating but also dating with other elements).