Thank you for asking. I'll give you two examples for now. 1) To see the incredibly fine work on the shroud, one must look closely. The depth of the dark patches that create the image are far less than a human hair in thickness. And the dark and light fibers alternate as they are cross hatched. Imagine a checkerboard where the black squares are perfectly filled but the light squares have no pigment. To see the image at this resolution--yes, it's like pixels on a PC screen, requires an electron microscope! 2) There are several dozen details on the shroud image that match how Rome would have crucified, scourged and placed a crown of thorns on a 1st century victim--in Israel. No archaeology existed to share these details with medieval or Renaissance forgers, and archaeology only confirmed certain details in recent decades.
Taken together, we have an image that no known natural or man-made process can duplicate, though hobbyists and scientists have attempted to do so for centuries, and if we could, it was done or forged in the 1st century in Israel.
