Carbon dating go
In several documented situations when carbon dating ran contrary to common scientific assumptions, the results were only an anomaly if the world were billions of years old.
If the earth were thousands of years old, the results of these tests would have fit in perfectly. Since the former is radioactive and decays at a constant pace while the latter is stable, the ratio between the two can determine the age of anything that was on the earth and breathed.
Within the physical limitations of the technique and theoretical work behind it (you can't use it on very young things and it doesn't work when you go too far back), yes, it is extremely reliable.
Objects have been carbon-dated and the results were within weeks of the known date of origin; the error values of experimentation were far greater than the actual difference between dated and known times.
In general, the shorter the half-life of a radioisotope, the less far back in time it will be useful in dating things from the past.
Metal objects have been used as money dating back as far as 5,000 BC.
The Lydians were the first people in the western world to use coins from about 700 BC.
As far back as there were organisms who were able to consume food containing both ordinary carbon and an isotope of carbon; the comparison of the ratios - which pinpoints the time when an organism stopped eating - gives rise to carbon dating. After a while, there is not enough radioactive carbon for the machinery to measure. If a person picked it up with his bare hands, some of the carbon from his skin may have mixed with…
The benefits of carbon dating is that it can give a guide as to the age of an artifact or fossil. It is through measuring the amount of carbon-14 in an organic sample that we can find out how long ago the sample was part of a living orgainsm.