How on earth could it do that?
If I convincingly fake a dollar bill, how does it prove that the one in your pocket is also a fake?
Carbon-date some Shroud threads NOT taken from the 13th century patch and see what the age is. That's science. But pretending that a fake proves that something else is a fake is just lunacy - or rather, it's the dishonest advancement of an atheist agenda.
Also: if the Shroud image is caused by a natural process to do with, I don't know, ammonia, heat, blood, aloes, whatever then reproducing the effect hardly falsifies the Shroud. Rather, it tends to validate it.
I was not aware the sample was taken from a patch...can you point me to a source on that?
Well, I believe it is real and after two thousand years Christ is still generating controversy. Most celebs would KILL to have that ability.