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A comment on Exotic Physics Phenomenon Involving Time Reversal Observed for First Time. Parent comment

Re:Exotic Physics Phenomenon Involving Time Reversal Observe... by leereeves on Wednesday September 25, 2019 @01:42PM (#21073137)
I apologize if I misunderstood yours.

If we've changed topics to physics, I agree it's very interesting. The more we learn the stranger the universe seems.

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Re:Exotic Physics Phenomenon Involving Time Reversal Observe... by bpaddock on Wednesday September 25, 2019 @02:04PM (#21073393)
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).

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Re:Exotic Physics Phenomenon Involving Time Reversal Observe... by rrmm on Wednesday September 25, 2019 @05:55PM (#21075996)
It's not about reversal of time so much as time-reversal symmetry in a physical system (putting a -t in place of a t).
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Re:Exotic Physics Phenomenon Involving Time Reversal Observe... by bpaddock on Friday September 27, 2019 @08:06AM (#21090934)
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. ..."

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3971164/

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