What to do with a young fundie?

[jeriendhal]

Okay, I'm torn. On the forum of one of the webcomics I frequent, the community is fairly low key and friendly (it helps that there are perhaps a dozen regular posters, tops). One of them is a young man, I believe about seventeen, who generally is well spoken, of a Conservative Christian bent, and willing to argue his POV politely while respecting other's POV.

So today he dropped a note into a thread discussing Global Warming, relative tempertures during the Creataceous Period, and local gravity fields as affected by the recent Tsunami disaster, containing the following words:

"You do know the Earth is only 6,000 years old, right?"

*facepalm*

I want to answer back with a reference to the classic "Why couldn't it have been one LONG miracle?" from Inherit the Wind, but I know it's not going to do any good. This is how the kid was raised, and attempts to use logic and science references probably aren't going to work.

Sigh.

EDIT

Couple of people beat me to it, one pointing out that recorded history does in fact extend more than 10,000 years. Yeah.