>This is absurd. If you can send messages back in time, then someone can build a robot that can accept messages from the future, and kill your parents that way^

>This is absurd. If you can send messages back in time, then someone can build a robot that can accept messages from the future, and kill your parents that way^. Sending information back in time is a paradox. That's only true if "free will" exists, i.e. if its really "changing" the past instead of fulfilling it.