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As scientists who study earth’s (relatively) modern history rely on this measurement tool to place their findings in the correct time period, the discovery that it is unreliable could put some in a quandary.For instance, remnants of organic matter formerly held up as solid evidence of the most recent, large-scale global warming event some 40,000 years ago may actually date back far earlier to a previous ice age.Many people are under the false impression that carbon dating proves that dinosaurs and other extinct animals lived millions of years ago.What many do not realize is that carbon dating is not used to date dinosaurs. Carbon dating is only accurate back a few thousand years.The results can be as much as 150 million years different from each other! They then pick the date they like best, based upon their preconceived notion of how old their theory says the fossil should be .So they start with the assumption that dinosaurs lived millions of years ago, then manipulate the results until they agree with their conclusion. So why is it that if the date doesn't fit the theory, they change the facts?

Their recent analysis of sediment from the largest freshwater lake in northeast China showed that its carbon clock stopped ticking as early as 30,000 years ago, or nearly half as long as was hitherto thought.

by Helen Fryman Question: What about radiocarbon dating? Response: I asked several people who know about this field. (1.) C14 dating is very accurate for wood used up to about 4,000 years ago.

This is only because it is well calibrated with objects of known age.

Example: wood found in a grave of known age by historically reliable documents is the standard for that time for the C14 content.

This standard content of C14 can then be used for wood not associated with a historically documented date.

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