how is the shroud of Turin fake?
Refusing to recognize a medieval hoax is an embarrassment to Christianity and an insult to your intelligence do better.
Here is a summary I found online detailing all the flaws =>>>>
"The primary evidence used to disprove the Shroud of Turin's authenticity is the 1988 radiocarbon dating, which placed the linen's origin between 1260 and 1390, confirming it as a medieval artifact rather than the burial cloth of Jesus. This scientific conclusion is supported by historical documents, including a 1390 letter from Bishop Pierre d'Arcis, who claimed the cloth was a fraud created by an artist to deceive the faithful, and a newly discovered 1370 text by philosopher Nicole Oresme that also alleged the Shroud was faked.
Additional forensic and scientific studies have further challenged the Shroud's validity by arguing that its image and bloodstains are inconsistent with a crucified human body:
3D modeling studies (including a 2025 analysis) suggest the image is more likely an imprint of a low-relief sculpture rather than a human body.
Blood pattern analysis conducted by forensic scientists indicates the stains are inconsistent with a single position, requiring multiple poses or different times to form, which contradicts the theory of a single burial.
Historical context reveals that the cloth appeared in France around 1355 and was later moved to Turin in 1578, with no credible documentation of its existence prior to the 14th century.
While the Vatican has not officially declared the Shroud fake, it considers the cloth an icon to be venerated rather than a holy relic, and some researchers argue that the 1988 dating may be flawed due to potential contamination or the use of a medieval repair patch. However, scientific consensus and historical records overwhelmingly point to the Shroud being a 14th-century creation made by human hands."
Here is some more in depth read
https://www.skeptic.com/article/shroud-of-turin-authenticity-examined/Christians need to inject copium into their veins now and then because the church knows that if jesus was real he would have come back long ago. So for over 2000 years they give themselves a shot to keep going for another +10 more years.