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    LoyalLoyalJusticeJustice
    Made withinDC&Austin
    Statements
    321,452
    Perspectives
    108,905
    Topics
    42
    Home/Original/inverse
    See Original
    Inverse View

    It is not the case that A geodesic directing field (guiding field / projective structure) must be posited to provide a standard of zero 3-acceleration.

    ?Set your confidence on the premises below to see your aggregate.

    Reasons For

    2 perspectives
    Reason for 1 of 2
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    • 1.The projective structure can be read off from the metric tensor, making it a derived feature rather than an independently posited field.
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      Think about whether this reason is strong or weak

    • 2.In general relativity, the metric already encodes geodesic structure, so positing a separate guiding field introduces unmotivated ontological duplication.
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    • 3.Weyl's own conformal-projective decomposition program presupposes metrical underdetermination that standard GR does not exhibit.
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    Reason for 2 of 2
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    • 1.Dynamical approaches to spacetime structure, as defended by Brown and Pooley, ground inertial standards in the symmetries of matter laws rather than autonomous geometric fields.
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      Think about whether this reason is strong or weak

    • 2.If geodesic behavior is explained by the dynamical dispositions of matter, the projective structure is an unnecessary postulate that violates Occam's razor in its strongest form.
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      Think about whether this reason is strong or weak

    Reasons Against

    1 perspective
    Reason against
    ?
    • 1.There is no unique standard of zero 3-acceleration intrinsic to the differential topological structure of spacetime.
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      Think about whether this reason is strong or weak

    • 2.Physical theories require a determinate standard for zero acceleration.
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    • 3.The projective structure provides such a standard by supplying the missing geometric field extrinsic to bare topology.
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