I had this discussion about this episode of Community some time ago. I am actually bothered by the fact that since there is a timeline where Abed catch the dice there should not be other timeline. Since there was a canceling action that took place before the completion of the hazardeous mechanism the dice never actually even touched the table. there should only be one timeline : the one where Abed catch the dice.
However, I am feeling like there should be a more formal way to explain this, and also there should be formal ways to explain the coexistence of the seven timeline presented, some meta-physics or philosophical principle may do the trick. (I looked at what determinism said for example but wasn't fully satisfied with what I found)
Can someone bright some light on some timeline theories related to hazard and decision ?