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    Carmelics

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

    It is not the case that Without the assumption that bodies exist independently of place, astronomical and other measurements lose their validity.

    ?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.Poincaré demonstrated that geometry is conventional: we can always reinterpret physical facts by adopting a different geometry paired with different physical laws.
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    • 2.If geometric assumptions are conventions rather than empirical necessities, the rigid-body assumption is one choice among empirically equivalent alternatives, not a precondition of measurement validity.
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    • 3.Therefore, measurements retain validity under alternative geometric conventions that abandon place-independence, provided compensating adjustments are made to physical laws.
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    Reason for 2 of 2
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    • 1.General relativity establishes that spacetime curvature varies with mass-energy distribution, meaning rigid bodies and light paths are locally deformed in gravitational fields.
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      Think about whether this reason is strong or weak

    • 2.Astronomical measurement in relativistic cosmology proceeds successfully by incorporating variable metric structure rather than assuming place-independent rigidity.
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      Think about whether this reason is strong or weak

    • 3.The empirical success of such measurements shows that validity requires accurate modeling of metric variation, not the assumption that bodies exist independently of place.
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    Reasons Against

    1 perspective
    Reason against
    ?
    • 1.Valid measurement requires units of comparison with invariant properties.
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    • 2.Rays of light as shortest paths between two points and rigid bodies like meter sticks are the basis of astronomical and distance measurement.
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    • 3.If the assumption that bodies exist independently of place fails, rays of light and rigid bodies no longer have the invariant properties required for valid measurement.
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    Strongest counterpoint
    Explore the most compelling reason on the other side.