User blog comment:Lonearch/Arrow Season 5 Theories/THoughts/@comment-27700324-20160704035704/@comment-27700324-20160704213341

Some (AKA most) are a mess, and don't work with the show's themes, structure, or character motivations. They are believable in that universe, doesn't mean they should happen. Yes time travel exists, and characters have come back. It was all for a good reason though, Sara came back because they had the vigilante arc in S2, and Laurel was in the middle of the most boring arc of the season. Sara came back (again) because of a new great superhero show. I have one question for you MS225. Why should they bring Laurel back from the dead?

And i think we both can agree that the Black Siren theory sucks.