Carbon dating is hard. Pluck a feather from a living penguin & you may find it's 800 yrs old. Thats bec much of the C14 in fish it ate upwelled from bottom of ocean & might have orig come from air over the N. Atlantic 1,300 yrs ago..& THEN A-bombs shaved off 500 yrs! CALIBRATION!
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They added C14 to the system
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Timelords.
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