The PATH is made ready before the JOURNEY is made.: I figured
  out a link between 'uncertainty principal" and the "all or none"
  law in the the brain. In quantum physics, an electron (for
  example) has the potential to be in a number of places, but it
  is "more likely" to be in some places rather than others. In the
  end, it does choose a path. or better still: LIGHTNING: It finds
  a path from A to B - but you can't predict exactly how it will
  get there. Now, the brain part: In the brain, before a neuron
  fires, its "likely paths" are depolarized - a SPACE is opened up
  for it to activate. THEN the neuron fires, choosing, as it were,
  a way to get where it needs to go. An analogy, from "The Wave
  Watcher's Companion" is: "This is a little like a person
  becoming excited, and thereby more likely to start shouting."
  Or, I think of it as the smart way to move heavy furniture:
  Clear out a path BEFORE you start lifting the furniture. Get the
  chairs out of the way, open all doors, make sure the path is
  wide enough. You don't NEED all that space, but you have to make
  it as easy as possible to DO IT RIGHT. This is a feature built
  in to nature. and I find this quiet awesome.