I like going with working assumptions. The stuff we know are
  working assumptions. They can be changed. They might stay the
  same. But the stuff we don't know yet ,we don't know yet.
  Considering we can only predict the future based upon working
  assumptions but we can't ACTUALLY predict the future per se
  [unless we're blinded by the emotion of certainty] - there must
  be more possibilities ahead of us. Of course there are also
  possibilities in the past as well, as we don't have a full
  knowledge of the past, even our own - just stories carried
  forward that are plausible. And the present moment? That's got
  its own set of dilemmas. We anticipate, we witness whether our
  expectations meet with the results, we have cognitive dissonance
  and then try to resolve it, and in the process we tell ourselves
  a quick story about "what's happening now" - all around the
  400ms mark in our brain as we travel through this experience
  we're all in that's unique to each of us, yet shared in that we
  understand the difficulties it can create. So for me, working
  assumptions works. The rest is the realm of possibilities. I'd
  say most things lie in the realm of possibilities, outside of
  our working assumptions, which may be many, but not all. After
  all, are we not surprised at things that are novel until after
  we've explained to ourselves (or had explained to us) 'what just
  happened?"