the inability of current science to square relativity and its predictions of space-time with quantum mechanics is exactly the reason why we aren't sure, and one

the inability of current science to square relativity and its predictions of space-time with quantum mechanics is exactly the reason why we aren't sure, and one of the biggest open questions in physics. I mean it could all be strings, or quantum gravity, or Wolfram's crazy graph theory automatons, or maybe something else entirely. We don't know.