...theory itself! One thought, they're building up a franchise so anything is possible. Your talking about theories being dumb and because they're dumb they couldn't possibly be in the movie. There's dumb stuff in movies all the time! Another thing, towards the end, your binary hypothetical counter-theorizing states that The Joker is either THE Joker or he's a replacement Jason Todd Joker. What if THE Joker is Jason Todd and there never was a Joker before the Jason Todd Joker in this story? "That would be insanely stupid!" Ok, but it doesn't mean it's not possible. They casted Will Smith as Deadshot. Think about that.