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14735 | Space is 3D and lacks a direction; time seems connected to causation [Sider] |
Full Idea: Unlike time, space has three dimensions and lacks a distinguishing direction; unlike space, time seems to be specially connected with causation. | |
From: Theodore Sider (Four Dimensionalism [2001], 4.5) | |
A reaction: These strike me as nice reasons to doubt (what I already prima facie doubt) that there is a single manifold that is 'space-time', for all that twentieth century physics tells us it is so. A century is a mere click of a clock where truth is concerned. |