Radiometric dating is a tool that evolutionists use to prop up their theories. 
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It relies on extremely rigid assumptions some of which are contradicted by observation.
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Often the dating is made to conform with the theory.  For example, the dating of dinosaur fossils are forced to yield the assumed date when dinosaurs were destroyed. 
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Essentially, radiometric dating looks at the amount of radioactive element (parent) and the amount of decayed element (daughter)  in a sample.
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The assumptions of radiomentric dating: https://answersingenesis.org/geology/radiometric-dating/radiometric-dating-problems-with-the-assumptions/ <br><br>
Assumption 1: Pristine condition at Time Zero <br>(no daughter element present)<br> <br>
Assumption 2: No Contamination <br>(no daughter element externally induced) <br> <br>
Assumption 3: Constant Decay Rate<br> (only 100 years of observation) <br> 
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Go to the videos 1. http://www.lucasco.info/upload/common/videos/creationism/Carbon%20Dating%20Flaws.mp4  2. http://www.lucasco.info/upload/common/videos/creationism/Radiometric%20Dating%20Debunked%20in%203%20Minutes.mp4 3. http://www.lucasco.info/upload/common/videos/creationism/Radiometric%20Dating.mp4 
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