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184 points mikhael | 1 comments | | HN request time: 0s | source
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ineedasername ◴[] No.45660748[source]
Doesn’t this sound like a sneaky way for a mathematician to work on time travel?
replies(2): >>45660799 #>>45662046 #
1. TomasNieteriter ◴[] No.45662046[source]
In Ernst Mach's Opera Omnia, his Principia had a `gedenken experiment' visiting a related question about angular inertia, as an affection of all the matter in the universe and its simultaneity with local causation. He inferred by simile of unwinding the trajectory of a toy spinning top on the possibility of reversing the arrow of time.