Not nonsense at all. You have indicated that you are a skeptic as to the authenticity of the Shroud by mocking my assertion that the evidence shows, beyond a reasonable doubt, it is authentic. You must have reasons to be skeptical. Tell me your reasons. If your reason is you believe there is not enough evidence then at least offer what more evidence is needed. And as I mentioned above, within a standard of reasonable doubt as is used in Court, not beyond any possibility.
As far as your allegation that my attitude provides cannon fodder for the looney left, well that allegation itself is looney. How does pointing to abundant evidence that the Shroud is authentic provide cannon fodder for the looney left? What is truly looney, yet in complete accordance with leftist debate tactics when they are losing the debate, is to simply ignore the evidence. That seems to be what you are doing because you have not even discussed the evidence at all. You have not given even one good reason to be skeptical that the Shroud is authentic.