Rumraket's and Talk Origin's contamination arguments have this fundamental flaw:
The presence of C14 and unracemized amino acids in supposedly old fossils is strong reason to doubt the fossil record is hundreds of millions of years old. Darwinists insist the primary reason for the presence of C14 and unracemized amino acids is due to in situ contamination (contamination while buried). Their claim would be credible if C14 and the homochiral amino acids didn't have half-lives! Because the supposed contaminants have half-lives, the claim of contamination has many problems. This essay attempts to give a more qualitative treatment than the more quantitative treatment I gave earlier:
https://www.reddit.com/r/Creation/comme ... _problems/From a non-theological standpoint, one can believe in an Old Universe, and Old Earth and a recent fossil record. The age of the fossil record is a question of establishing the time of death, somewhat like a detective. It is not a theological claim in a strict sense.
It is illogical to date a fossil by the age of the rocks that its buried in. If someone buried a live dog today in 100 million year-old rock, does it make the poor dog a 100 million-year-old fossil? No. The time of death is better determined by looking at the fossil itself for clues to the time of death than the age of the rocks the fossil is buried in. The presence of C14 and unracemized amino acids in the fossil rule out a fossil being hundreds of millions of years old.
Darwinists invoke contamination by C14 and unracemized amino acids, but that is falsified by the Compounding Interest Paradox.
To understand the Compounding Interest Paradox. Suppose you gave yourself the task of keeping some water warm at by adding boiling water to it.
Say you started off with a cup of warm water. It cools to room temperature. So you grab a cup of boiling water and mix it with the cool water to get it warm. You have effectively raised the temperature of the mix by adding a boiling water "contaminant". But unfortunately, the "contaminant" has a half-life.
In not too long you'll be stuck not with 1 cup of cool water, but 2 cups of cool water. To elevate the temperature of the 2 cups of water, you grab 2 cups of boiling water and repeat the process. But then mix of warm water becomes 4 cups of cool water because the heat from the boiling water doesn't stay there forever, it has a half-life.
In not too long, restoring warmth to your sample of water by adding boiling water "contaminant" to it will entail needing to add an entire lake of boiling water!
The problem with claiming contaminants are added in situ is fraught with the same problem of adding outside c14-containing carbon and amino acid contaminants over millions of years to the original fossil with no credible means of removing it after the contaminant decays.
The Darwinists will respond by saying, "That's true, but that's not a problem because the contamination was recent, it didn't happen continuously for millions of years."
To which I say, "so the entire supposed 300,000,000-year-old Carboniferous era fossils (like coal) that has all these traces of C14 in them got contaminated GLOBALLY in the last 50,000 years for no good reason? Reductio ad absurbum! And How about marble and diamonds that aren't exactly porous to absorb contaminants?!" We find C14 traces in most coals we've tested around the globe when we were actually willing to date the coals.
The problem became so severe that physicists who needed C14-free carbon for their sub-atomic particle experiments gave up believing the paleontologists who said 300,000,000 million year coal would be free of C14. It wasn't. If the Darwinists were right, physicists would be using that supposed 300,000,000 million year old coal. Moral of the story, when the claim of the fossils being hundreds of millions of years old really counts for scientific applications like physics, it fails. It's more of an dogma than settled experimental science.