3 ms·
That’s not how it works. No one can visit your future first and your past later, whatever that means. Otherwise they could just stay with you in your past and
by kgwgk 5y ago
That’s not how it works. No one can visit your future first and your past later, whatever that means.
Otherwise they could just stay with you in your past and wait until their past self joins the party later.
[edit: Maybe you were not saying that in this comment. But other comments of yours are wrong so I can’t tell what are you saying, really.]
- tsimionescu 5y agoI was confused, you're right. The only thing that can be said about someone who experiences my past and later meets with me is that we might disagree about the order that far away events happened, but we will both agree that those events are in the past.
- kgwgk 5y agoI think that you can disagree as long as those two events have « space-like » separation. As you say, they could be events that happened in the past and are in your past light-cone. (As long as they happened far enough from each other - or close enough in time.) But one of the events could be your meeting now and here and the other event could be elsewhere. You may disagree on whether that event has happened already or not. Without having any direct confirmation yet, of course. But you may determine later that it was before and after your meeting at t=0.