The original subject here was a about reversal of time.
I mixed the two subjects of Parapsychology and Optical Phase Conjugation under that heading. They have nothing to do with each other (as far as we know at the moment).
In the case of Optical Phase Conjugation that is correct. Which is why I said "apparent" in my original post.
Physics allow for -t in many places.
However in the case of psi it is about time, that is effect happens before the cause.
"... PAA [predictive anticipatory activity, an other term for Presentiment], the predictive physiological anticipation of a truly randomly selected and thus unpredictable future event, has been under investigation for more than three decades, and a recent conservative meta-analysis suggests that the phenomenon is real. ..."