All the dating of the earth or universe beyond about 5,000 years back, is just guesswork. Why? Nobody knows what the geological qualities of the earth were like prior to that for sure. And, we can't find "ancient pottery" that we can date accurately beyond about 5,000 years ago. Even Gobekli Tepe has been dated according to "best efforts," which could as easily be way off.
Political science has drummed the idea of millions and billions of years into us. But there is no for sure hard facts, and little evidence that cannot be interpreted as a short time span at the same time as long.
