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A comment on A new kind of map: it’s about time. Parent comment

Re:A new kind of map: it’s about time by azernik on Wednesday September 20, 2017 @12:21PM (#15295505)
Given the non-Euclidean nature of travel time relationships, I suspect this is physically impossible in the general case.
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Re:A new kind of map: it’s about time by blt on Wednesday September 20, 2017 @03:34PM (#15297425)
hmm, the triangle inequality becomes always satisfied with equality.
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