Originally posted by Just4Hax
It is based off nothing contaminating the specimen. Meaning it must be a closed system. It must contain no daughter products meaning if your using carbon dating if the species had Nitrogen it could alter the dating process. If there were any great changes took place in the past it would effect the half-life. That could mean cosmic rays, electrons entering the atmosphere, etc... So it means that there are problems with fossil dating. Some scientists have even said the same thing.
I still don't understand, please link me to a source with these facts. The only argument against carbon dating in particular I've heard is that it assumes that the relative abundance of Carbon-14 has stayed the same from way back then to now, however it has also been tested against radiometric dating using different elements, and it turns out to be correct. Unless somehow the ratio of unstable carbon-14 to stable changed dramatically, and somehow just happened to be changed at the same rate as many other unstable isotopes, this wouldn't happen.
And isochron dating completely removes this factor anyways, which means it is extremely accurate. I can understand if you say using radiometric dating to predict the exact age of something can be problematic, as there is a slight chance, but to say that it doesn't even measure the relative age is absurd.
And let me just point out your arguments make NO sense.
1) Nitrogen is found within many organisms, but what the hell does that have to do with the half life of carbon?
2) Electrons entering the atmosphere? What the hell are you talking about? Electrons are always present in the atmosphere...
3) Cosmic radiation? Again, what does that have to do with carbon's half life or its relative abundance?
4) Closed system? Again lolwhut? No organism has a "closed system" if you mean no interaction exterior of itself.