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    Mach's principle holds that inertial frames are determine... — Carmelics
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    Challenges→It would be impossible to realign the earth and the fixed stars such that both are at rest with the coordinate system of the plasticine

    Mach's principle holds that inertial frames are determined relationally by the global mass distribution, not by an independently existing metrical field.

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    1 reason for
    1 reason against

    Reasons For

    1 perspective
    Reason for
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    • 1.Empty spacetime with no matter should have no privileged reference frames, suggesting inertial frames depend on actual mass distribution.
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    • 2.Rotational effects (centrifugal forces) correlate with rotation relative to distant stars, implying frames are defined by global matter distribution.
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    • 3.Absolute spacetime structure seems metaphysically extravagant when relational definitions of inertia explain the same empirical facts.
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    Reasons Against

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    Reason against
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    • 1.General relativity permits solutions with inertial frames in empty regions far from all matter, contradicting strict relational determination.
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    • 2.Frame-dragging effects near rotating masses are weak and don't fully determine inertial frames, suggesting independent geometric structure.
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    • 3.Mach's principle is vague about the precise mechanism by which distant masses determine local inertia, limiting its empirical testability.
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    Causation1 linkedModality & Possibility1 linked

    Related

    Absolute spacetime structure seems metaphysically extravagant when relational de...Empty spacetime with no matter should have no privileged reference frames, sugge...Frame-dragging effects near rotating masses are weak and don't fully determine i...General relativity permits solutions with inertial frames in empty regions far f...
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    It would be impossible to realign the earth and the fixed stars such that both a...Mach's principle is vague about the precise mechanism by which distant masses de...Rotational effects (centrifugal forces) correlate with rotation relative to dist...

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    Perspectives
    2 (1 for, 1 against)
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