Counterpart to the ‘would you kill Archduke Ferdinand and start a terrible war?’ thread.
Say you are you, now, minding your own business, and someone comes up and tells you that they are a time traveler, and that today you are going to do something seemingly innocent, but that leads to something bad in the future. Since he has not already killed you, you can assume it isn’t a ‘kill young Hitler (you)’ scenario.
Let’s say, for purposes of this discussion, that you totally believe this is a time traveler. Allowing for the fact that absolute proof is impossible, whatever proof you need has been given. You are convince he is real, and that you are not crazy.
Would you believe him, and not do it?
Would you not believe him, and think ‘not’ doing it is what causes more harm, and he’s trying to trick you?
For example, he says today you are going to meet your future spouse, and your son is going to create Skynet.
Do you believe him, and avoid the person he identifies as your future spouse?
Or do you consider that your son is actually going to be John Connor, and he’s is trying to prevent John’s birth?
I’m not sure what I would do. I think I’d be Vezzini, trapped in a unresolvable loop (clearly he knows I wouldn’t believe him, so I should do the opposite. But, he knows I would know not to believe him, so I should do what he asks…)