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they make up a train.
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What's the right kind of
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metaphysical glue for trains?
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Well, it's being connected with those little locks.
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That may or may not be the right way to think about
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what I've been calling car stages or car slices.
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On some metaphysical views,
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you might say, just exactly like with the train,
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the car stages are the metaphysically fundamental things
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and a car, something extended through time,
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is glued together like a sandwich
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from the car stages.