Christ didn't appear in 1844, so some explanation was invented to keep the faithful contributing cash and time to a lost cause. They hit upon the idea that he did in fact return, but you can't see him.
Sounds more akin to the invisible tooth fairy who is never seen.
"Spiritual reality is outside of the physical domain. If it could be detected by the scientific method then it would exist as an aspect of physical reality."
Could you please explain what you mean by "outside of the physical domain"? Can it be detected, and if so how is it detected?"
