Searching for the right analogy for an idea, I successfully
  found #nothing#

  Inbetween the two +, perfectly centered, would feel nothing. No
  push, no pull, Right in the middle of that diamond shape between
  the two pluses. Shift a tiny bit, though, and you get shot out
  like spitting out a watermelon seed at summertime. The context
  doesn't matter to me at the moment: its the idea of a nothing
  spot. Something has to surround nothing....

  The center between the + and - would also be a nothing, but
  we're more familiar with that kind of nothing. Its the other
  kind of nothing that interests me.