Simultaneity

Definition and stakes

Anonymous,  The Philosophical Review (1892)

“ But it may be said that even here we employ the notion of simultaneity, which implies time. We must deepen the notion of simultaneity. A motionless world would be out of time, or rather time would not exist; yet we should speak of the simultaneity of the different relations existing between the parts of this world. ”
Source: Wikisource

Portrait of Bertrand Russell Bertrand Russell,  The Analysis of Mind

“ I think the relation may be called simply "simultaneity." It might be said that at any moment all sorts of things that are not part of my experience are happening in the world, and that therefore the relation we are seeking to define cannot be merely simultaneity. This, however, would be an error—the sort of error that the theory of relativity avoids. There is not one universal time, except by an elaborate construction; there are only local times, each of which may be taken to be the time within one biography. ”
Source: Gutenberg

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