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?"