What Christians call prayer, IS NOT what witches call spell casting, nor is it what Spiritualists call manifestations.
True a Doctor might in some instances call this praying the placebo effect, but not all doctors are Atheists, who probably have no attributable opinion since atheism relates only to the none existence of a god(s)
As only by tortured mental gymnastics could the uncertainty principle aspects of quantum physics be attributed to prayer, most of this post can in the words of the late great Douglas Adams be dismissed as
"a load of dingo's kidneys!"
I figure whatever works for ya; just leave everyone not interested in your "whatever" the fuck alone.
Except that double-blind studies on prayer, for one, have showed the people prayed for had Worse outcomes.....
It seems to be associated with existence, has a variety of forms, best guess water.
I too err on the side of quantum physics or spooky science
The quantum physics definition sounds good to me.