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    Julian Barbour and others argue that time is not extracte... — Carmelics
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    Challenges→Extracting a notion of time from the canonical formulation of general relativity constitutes a classical problem of time.

    Julian Barbour and others argue that time is not extracted from GR but is rather eliminated entirely, making 'extraction' a category error.

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    1 reason for
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    Reasons For

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    Reason for
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    • 1.GR's mathematical formalism treats time as a coordinate indistinguishable from spatial dimensions, suggesting time lacks fundamental ontological status.
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    • 2.The Wheeler-DeWitt equation describes quantum gravity without explicit time evolution, supporting the view that time emerges rather than being fundamental.
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    • 3.Calling time 'extracted' presupposes time exists prior to extraction, but if GR eliminates it, this language mistakes the map for the territory.
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    Reasons Against

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    Reason against
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    • 1.GR's spacetime metric still contains a time-like coordinate with causal properties distinct from space-like ones, suggesting time has real structure.
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    • 2.Elimination claims conflate mathematical formalism with physical reality; coordinate independence doesn't entail that temporal phenomena don't exist.
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    • 3.Emergent time theories still require time-like ordering relations at some level, so 'elimination' merely relocates rather than removes temporal structure.
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    Causation1 linkedModality & Possibility1 linked

    Related

    Calling time 'extracted' presupposes time exists prior to extraction, but if GR ...Elimination claims conflate mathematical formalism with physical reality; coordi...Emergent time theories still require time-like ordering relations at some level,...Extracting a notion of time from the canonical formulation of general relativity...
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    GR's mathematical formalism treats time as a coordinate indistinguishable from s...GR's spacetime metric still contains a time-like coordinate with causal properti...The Wheeler-DeWitt equation describes quantum gravity without explicit time evol...

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    2 (1 for, 1 against)
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