Board Thread:General Discussion/@comment-26346951-20150716173453/@comment-24674051-20150716205446

and BTW, the season 3B plot with Zelena was perfectly set up to invoke the Grandfather paradox. Because if Zelena succeeeds in removing Ava, and thereby removing Snow, Emma, Henry, and quite likely Regina, then her motivation to open the time portal to begin with is removed, which would prevent her from going back in time to kill Ava. you see where this is going.