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    $\begingroup$ Do you understand this diagram i.sstatic.net/AtqPQ.gif from en.wikipedia.org/wiki/Relativity_of_simultaneity ? $\endgroup$ Commented Mar 8, 2025 at 17:49
  • $\begingroup$ Yes I do but I can't see the connection, how does the two events not being causally related allow a moving observer to observe them to be simultaneous? $\endgroup$ Commented Mar 8, 2025 at 17:56
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    $\begingroup$ Based on the length of the 3 answers so far, I wonder if I am missing a nuance of your question. Say you are traveling in a car at a constant speed on a straight, level road (so it's an inertial frame). On your right, a person turns on their porch light. On your left, a cow is chewing her cud and her jaw is at a particular angle in her chewing cycle. The light from both events reach your left eye at the same time. Are you asking how those two events can be causally unrelated? $\endgroup$ Commented Mar 9, 2025 at 2:26
  • $\begingroup$ I have completely understood it now, should I close the question or what should I do? $\endgroup$ Commented Mar 9, 2025 at 4:10
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    $\begingroup$ You should select the check mark next to the answer that (best) resolved your problem. $\endgroup$ Commented Mar 9, 2025 at 4:40