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2 ideas
14991 | Space has real betweenness and congruence structure (though it is not the Euclidean concepts) [Sider] |
Full Idea: In metaphysics, space is intrinsically structured; the genuine betweenness and congruence relations are privileged in a way that Euclidean-betweenness and Euclidean-congruence are not. | |
From: Theodore Sider (Writing the Book of the World [2011], 03.4) | |
A reaction: I note that Einstein requires space to be 'curved', which implies that it is a substance with properties. |
15021 | The central question in the philosophy of time is: How alike are time and space? [Sider] |
Full Idea: The central question in the philosophy of time is: How alike are time and space? | |
From: Theodore Sider (Writing the Book of the World [2011], 11.1) |