But the evidence says nothing of the construction. The only thing carbon remnants indicate is that the pyramids are at least that old. That they were used and inhabited that long ago. If you believe they were constructed at the time, I would ask what evidence is there? Scant radiocarbon dating is not a definitive story to believe. Lichen in the granite quarry? Remnants along the road? A bakery and some mortar dust does not explain or date the construction of mountains of granite with no mortar between joints.