Maybe they determined it's actually 6,002 years old?
Well, the advanced civilization that used to live on Earth left for space about 10,000 years ago - 6,000 years ago was when the liberal Luddites they left behind devolved completely, forgot speech, fire, and the wheel, and had the last of their Section 8 housing fall down around their ears, forcing them out onto the plains as hunter-gatherers...where a (saber-toothed) Darwinian process weeded out the biggest losers and allowed the rest to start civilization over again. ;)