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A comment on A Growing Number of Scientists Are Convinced the Future Influences the Past. Parent comment

Re:A Growing Number of Scientists Are Convinced the Future I... by MayeulC on Friday March 17, 2023 @02:49PM (#35201235)
Interestingly, the norm of your 4D speed vector is constant, IIRC: https://en.wikipedia.org/wiki/World_line
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