"Things made in Roman times don't go back billions of years."
No they dont. But the same basic techniques are used.
I have heard of bones from living elephants and eggshells being radioactivly dated as over a hundred thousand years old. Yet the egg shells were chicken eggs from living chickens. How can that be if the science is so solid?
I think a whole lot of people do not realize that evolution "science" is a religion and subject to bias like all faith systems.