query: Why is it necessary that different observers agree on the value of the spacetime interval $ds^2$?
positive_passages.docid: 69464
positive_passages.text: Do we know why there is a speed limit in our universe?
negative_passages.docid: 105865
negative_passages.text: The twin paradox and positively curved space
negative_passages.docid: 75788
negative_passages.text: Is spacetime absolute?
negative_passages.docid: 155657
negative_passages.text: argument about fallacy of diff(M) being a gauge group for general relativity
negative_passages.docid: 37327
negative_passages.text: Is 3+1 spacetime as privileged as is claimed?
negative_passages.docid: 50684
negative_passages.text: Does the sign of $\Delta x$ matter in this time dilation calculation?
negative_passages.docid: 121904
negative_passages.text: Regarding the possibility of Closed Timelike Curves
negative_passages.docid: 117326
negative_passages.text: Why energy curves spacetime?
negative_passages.docid: 13786
negative_passages.text: A question in Special Relativity
negative_passages.docid: 126831
negative_passages.text: Does entanglement not immediately contradict the theory of special relativity?
negative_passages.docid: 114910
negative_passages.text: In what subfields and how far can the naive limit $c\rightarrow\infty$ of special relativity be carried?
negative_passages.docid: 108384
negative_passages.text: Special Relativity and $E = mc^2$
negative_passages.docid: 53952
negative_passages.text: What does $\frac{1}{\sqrt{1 - \frac{v^2}{c^2}}}$ mean with respect to special relativity?
negative_passages.docid: 43724
negative_passages.text: What do spacelike, timelike and lightlike spacetime interval really mean?
negative_passages.docid: 83341
negative_passages.text: How can Planck units be consistent with conflicting dimensions of mass?
negative_passages.docid: 106272
negative_passages.text: Do numbers exist independently from observers?
negative_passages.docid: 89789
negative_passages.text: Spacelike interval and length contraction