CHICAGO — Measurement Quantization proposes a test of its galactic gravity prescription at earlier cosmic ages. Under the stated age relation, the characteristic acceleration scale is larger in a younger universe. For the same independently specified baryonic source, the law predicts a stronger realized response, with a larger fractional effect in low-acceleration regions.

The phrase same source is essential. The calculation holds the ordinary-matter distribution fixed to isolate the explicit age dependence of the law. It does not assume that real galaxies retain the same gas content, size, stellar population or internal motions as they evolve. Figure 1 distinguishes that controlled prediction from a galaxy-formation history.

The source proposes a resolved-galaxy comparison at intermediate redshift, roughly 0.5–1.5, with the age relation, expansion history and source-reconstruction procedure fixed before residual inspection. Existing surveys provide relevant kinematic observations, but their published analyses are not already a dedicated test of the MQ age dependence.

Redshift is not itself elapsed cosmic time. Converting it to the age used by the law requires a specified expansion history and present-age normalization. Those choices carry model dependence and uncertainty. The small conditional error quoted for a calibration input does not quantify every uncertainty in the physical age normalization or observational covariance.

The predicted velocity shift also depends on baryonic acceleration. A younger age does not multiply every rotation curve by one universal percentage. Source reconstruction and pressure support, inclination, beam smearing and noncircular motion must be handled consistently before different epochs can be compared.

This is a narrower claim than a complete explanation of early galaxy formation. A stronger response for a prescribed source does not calculate cooling, star formation, feedback, mergers, luminosity or the abundance of mature galaxies. It should not be reported as an explanation already demonstrated for particular James Webb Space Telescope discoveries.

The companion Brief supplies the age-scaling and velocity equations, a reproducible fixed-source example and the manuscript’s conditional redshift benchmark. It explains how a test could challenge the predicted age dependence without readjusting the model for each galaxy.

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