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Mar 6, 2018 at 16:21 vote accept Pablo
Jan 9, 2017 at 2:26 answer added user140606 timeline score: 2
Jan 9, 2017 at 1:48 comment added user140606 On a deeper level, in both senses of the word: Special Relativity And The Curious Physics of Chronology and associated paper by Wilczek and Shapere Constraints on Chronologies
Jan 9, 2017 at 0:31 comment added user93237 @pablo - You're correct in thinking that if an event A causes an event B, then all observers must agree that the time of event A was before the time of event B. However, there can be two events that occur so far apart that neither could have caused the other, such as a rock falling on Earth and a rock simultaneously falling on a planet 100 light-years away. In that case then different observers may see one or the other event occurring before the other and there are no problems with causality because there can be no causal connection between the events.
Jan 9, 2017 at 0:30 comment added user140606 Related, possible duplicate: physics.stackexchange.com/questions/226432/…
Jan 9, 2017 at 0:18 comment added ACuriousMind The premise of your problem is impossible: Events which can change their order cannot be causes of each other in this way.
Jan 9, 2017 at 0:15 history asked Pablo CC BY-SA 3.0