I didn't ask if radiometric dating is valid and my question can't be answered by yes?I asked specifically about reliability and limitations with the assumption, that the method itself is valid. The method was developed by Willard Libby in the late 1940s and soon became a standard tool for archaeologists.
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Early geologists, in the 1700s and 1800s, noticed how fossils seemed to occur in sequences: certain assemblages of fossils were always found below other assemblages. Since 1859, paleontologists, or fossil experts, have searched the world for fossils.
In the past 150 years they have not found any fossils that Darwin would not have expected.
Radiometric dating, or radioactive dating as it is sometimes called, is a method used to date rocks and other objects based on the known decay rate of radioactive isotopes.
Different methods of radiometric dating can be used to estimate the age of a variety of natural and even man-made materials.
Current understanding of the history of life is probably close to the truth because it is based on repeated and careful testing and consideration of data.