I have actually never had much desire to debate the age of the earth. It really doesn't matter one way or another if the earth is 6,000 or 60,000,000 years old. Either way it's still earth, metaphorical or not. Although I will say that carbon dating is a pretty lousy way to get good age data.
I can't remember the dudes name, but who discovered ocean currents? They call him something like the 'father of modern oceanography'. He discovered underwater ocean currents after reading (in Job) the passage that discusses the "paths of the sea". He figured, "hey, if God says they are there, they must be there".
And there they were.
That's just one example of how the bible predates modern science.
Another would be circumcision. Ask any Jew the significance of that practice and they'll tell you of the custom. Along the same lines, the bible is very specific of when it must occur - 6 days after birth.
Wonder why?
6 days after birth is when the K Vitamin is the highest in newborn babies. It is the safest time to perform a procedure like that.
Again, the bible predates what modern science (and medicine) tells us what is best.
*(edited for terrible spelling...)*