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Oct5-11, 04:29 PM
Relativity is a difficult subject. Even simple cases are difficult to tackle. I would suggest that before looking at complex situations, you start looking at simple cases to begin with. Here are two simple cases:
1) Twin paradox. See:
2) Faster than light violates causality. See
Both the example in the link is about Special relativity.
That confusion is not necessary.
relativity alone is enough.
Donít make it more complicated as it is.