That's the thesis of the book, or the article about the book?
Thesis of the book... and the article is about the book, "The Sign"...
Yes, it is....and that’s why what could otherwise have been a good book is nonsense.
This guy lays out a good case for the authenticity of the Shroud (albeit he plows no new ground), THEN makes one hell of a leap in logic to declare that the disciples’ viewing of His image on the cloth is the entire basis for the resurrection (despite dozens of sightings of Christ post-crucifixion). Frankly, stuff like this just pisses me off.
Without a resurrection (not just viewing an image on a burial cloth), there IS no Christianity.