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21632 | A river is not just event; it needs actual and counterfactual boundaries [Williamson] |
Full Idea: A river is not just an event. One would need to specify counterfactual as well as actual boundaries. | |
From: Timothy Williamson (Vagueness [1994], 9.3) | |
A reaction: In other words the same river can change its course a bit, but it can't head off in the opposite direction. |