Isotope dating is based on assumptions, but for the presence of a Sky Daddy they just need a piece of paper containing stories which have changed (sometimes quite wildly) over the past centuries. Right, makes perfect sense.
You see, if you add up the ages of all the characters in the Bible, include exactly 7 total days for the creation of the Earth, you get the only possible answer for the age of the Earth.
No point in taking apart the ignorance in display, but I found A Short History of Nearly Everything by Bill Bryson to be eye opening, science history for laymen.
One related item surprised me. Long before we arrived at the Earth’s age, proto-scientists, natural philosophers or what have you, were puzzled. Even a couple of hundred years back they couldn’t explain the age of the Earth given their observations, thinking a few million years couldn’t be possible. Turns out, they were right, just not thinking big enough.
Orrrrr, humans and dinosaurs coexisted for 64,994,000 years.
Checkmate, paleontologists
ninja edit: …and anthropologists