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I say that most certified scientists are evolutionists or at least not Christians becuase they'd probably simply get fired if they were Christians

I wouldnt call these guys "certified scientists" I would call them "certified spineless jellyfish" because they are wimps which clearly do not deserve to call themselves Christians.

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Also, I don't know if radiometric dating is similar to carbon dating

carbon dating is a type of radiometric dating and it is only good for dating things up to 50000 years. It makes me wonder why there are coal with Carbon14 in it when coal is supposed to be millions of years old.

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Also, am I correct in saying that carbon dating uses light in some way?

No, cosmic rays hit neutrons in the atmosphere and those nuetrons hit nitrogen which converts it to Carbon14.

There are a bunch of variables at play when using carbon dating methods.

1)The amount of cosmic rays penetrating the atmosphere
2)The C14/C12 ratio in the atmosphere
3)A plant which take less Carbon14

Carbon dating is useless when trying to figure out the age of the earth.