Indeed. The thing that makes the subjective difficult to explain
  in objective terms as it depends upon shared experience for
  verification and even then, is it verified?

  I suppose we turn to "overview" / "top down" views of reality
  frequently because it's easy to look at a piece of paper
  together.

  But when two people are in different parts of a maze, their
  lefts and rights show different scenes and they don't see the
  overview.

  Yet the overview also cannot describe the perspectives of the
  two within the maze properly either.

  So, overlapping perspectives. I suppose it's the only way to
  manage. Top down plus bottom up plus the entirety plus the
  absence with waypoints highlighted for goals and such.