Another Use for Notecards

I don't know if this has ever happened to you (or whether I'm the only obsessively anal neurotic writer out there), but I recently faced a problem where I could NOT make a decision.  I had two choices for how a story could unfold.  I knew each path pretty well, and both had their positives and negatives.  But which was the BEST?  I couldn't decide.  I waivered back and forth, stewing about the right choice, and meanwhile, I couldn't make progress down either path, because OMG, what if I was g...