Coyote writes
Wrong on both counts! The first is too silly to even bother with. The second--he's behind the times. De Vries way back in 1958 published a paper showing that the amount of C14 in the atmosphere varies! Scientists have worked out a calibration curve to account for that variation, which is not very large anyway.
johnfolton
In marine fossils the concentration of C14 makes seals old even while they are living.
The fact as coyote points out is the self correction (calibration curve) which enables scientists to give a more correct age. What is the difference if an object is dated 20000 years or 21000 years? As for coal, most coal is much older than 30000 years it dates from plants living in the carboniferous period. Any C14 in the coal would have long since decayed. Any found in coal would be an impurity from some other source. If some one found coal with ~10% C14, then one could say that the dating would be off. Finding a few (1000000) atoms of C14 would not change the dating at all.
There is no better love between 2 people than mutual respect for each other WT Young, 2002
Who gave anyone the authority to call me an authority on anything. WT Young, 1969
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