QUOTE(Master Sage @ Feb 13 2006, 07:33 PM) [snapback]1060568[/snapback]
How can fire change the carbon content? Seems even more fake when they try to make that excuse.

No offence to belivers.
ash is mostly organic material, mainly carbon. if there was a fire around the shroud and it was coated with ash, even just a little bit, it would change the proportion between the radioactive and non radioactive carbon and effect the result.