Why carbon dating is flawed

I believe the general term for the field is "radioisotope dating", and it basically works by measuring the rate at which radioactive elements turn into other elements.

Let's say you have some element A with a half life of 250 years.

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This uncertainty is enough for a dedicated creationist to dismiss the entire science as quackery that's being made up on the spot.Creationists keep saying things like this, "How about the massive global carbon and coal deposits which render carbon dating inaccurate?" "Carbon dating can't prove anything is more than a few thousand years old."Could someone debunk this and explain how carbon dating works.In the example above, if the sample also contains some element B with a half life of 500 years, and we'd expect to find 100 grams of it in a brand new sample, we should find 50 grams of element B when element A is down to 25 grams.Carbon dating, incidentally, can also be (and has been) verified using still other methods, like counting tree rings and geological evidence.

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