DNA and other forensic evidence can pinpoint a person. I don't care how suggestive the evidence in the rocks is, there is no way you are going to be able to have absolute certainty about some imaginative scenario about the past.
DNA does not pinpoint a person. There is a margin of error in DNA comparisions, there is a margin of error in all science. There is no way you're going to have absolute certainty with DNA evidence.
If "elitist" just means "not the dumbest motherfucker in the room", I'll be an elitist!
*not an actual doctor