While personally, I don't believe there's a collective
   unconsciousness per se, there's still a lot of unknowns that we
   don't know because our approach excludes investigation or the
   field being used does not have room for such ideas, whereas
   another field might have room for it. [physics can't explain
   everything, neither can statistics. They're good at what they're
   good for, but not everything is a nail] Some human abilities are
   poorly understood at present. This doesn't mean they're
   mysterious - we have some answers - but there's a lot that's not
   yet fully fleshed out. Blindsight is something that has several
   competing hypothesis for example, but is poorly understood at
   present. It happens, it works. People have different abilities
   in that way. How does it work? Jury is out on it. Three major
   theories, other minor ones as well. I have a strong blindsight
   likely due to being born with no central vision in my right eye,
   and very poor vision in my left "good" eye. My brain formed
   without the ability to see 3D directly *apparently*, although I
   can 'see it' mentally. One specialist determined through some
   testing that my brain didn't form "3D cells" (I can explain the
   test and tell the story) - but I think it was a inhibition to
   make overlapping images based on amygdala push -- a "don't let
   images overlap or something bad might happen" automatic response
   that I could control with training but he advised against it,
   and I took his advice. Or maybe it was purely developmental.
   Anyway, doesn't matter whether it's in the eye, the control
   mechanism, the fear factor or lack of receptors - in the end, I
   don't see 3D but instead have a kind of "cyclops" vision with a
   weak right part that's purely peripheral. Now an easy answer you
   hear is, "Poor sensory input in one area makes others stronger",
   but that's not exactly true. It's use and practice - skill -
   that makes the other areas stronger. One of the stronger senses
   I have is blindsight. I know where things are around me and how
   far away they are and can react to them. Eyes closed, pitch
   black room, throw a ball at me, I'll catch it with the same
   frequency I'd catch the ball with my eyes open in a lit room.
   The explanations why they gave me are weak. I suspect it might
   have something to do with the "blue light" sensor - the one that
   wakes us up that blind people generally have intact. In any
   case, my point is: it's possible there ARE connections between
   people that are poorly understood and are not statistical
   randomness but could have alternative explanations that better
   describe the phenomenon than just "chance". Chance and
   statistics are weaker arguments than going through "what's known
   and not yet known". I have some ideas on how psychics do their
   thing for example. Most of them are trickery of course but they
   sometimes hit the mark quite well. Is it an astral realm? I
   don't believe so. But I believe there's abilities that are
   poorly explained at present.