Summary of arguments against McCrone and his findings:
1. McCrone might’ve believed he was on the STURP team, but in actuality he was not.
2. McCrone only studied from 32 sticky tape samples, which would be a very small subset of the entire shroud.
3. Though McCrone believed the TS was painted, he admitted he could not scientifically demonstrate this.
“I am not saying the Shroud is not authentic. I am saying that the image area has a lot of iron
oxide and a lot of artist’s pigment associated with it but I do not know whether the amount of
iron oxide present is sufficient to explain the entire image.”
4. McCrone believed the iron oxide could be a result of touch up paint.
“I know that a great deal of iron oxide is present in ways telling me it was done by an artist. I
do not know whether or not it is the entire image; it could be enhancement of an earlier
5. The sticky tape samples were not officially given to McCrone by STURP, but was loaned to him by Rogers.
6. McCrone admits he cannot scientifically prove the TS is a fake.
“I think it was a fake but I cannot prove it as a scientist.”
7. After STURP reviewed McCrone’s paper, it was deemed to not be scientifically rigorous.
8. Since McCrone studied the samples while it was on the sticky tape, it could make anything appear birefringent.
9. There are a multitude of flaws with McCrone’s explanation of how the shroud was created.
10. McCrone admits only a very small amount of iron oxide and vermilion are present and is much less than a normal painting.
11. McCrone does not challenge the STURP explanations of the presence of iron oxide thru flax retting and vermilion with replicas pressed against the TS to be blessed.
12. There are many extraneous particles found on the TS that could be lifted by sticky tape, but that doesn’t mean the entire shroud image would’ve been made by those particles.
13. Heller and Adler performed their tests by removing the sticky tape and adhesive, whereas McCrone did all his observations with the sticky tape intact.
14. Visual analysis through a microscope is subjective.
15. Polarized light microscopy is considered an antiquated technique and “has been largely lost during the past three decades.”
16. Heller and Adler performed a battery of chemical tests to show it is real blood.