Every dot is one real measurement in one real galaxy: the pull the visible matter can source (horizontal) versus the pull actually measured (vertical). Where the flow is fast they sit on the 1:1 line — light explains everything. But below a critical acceleration g† ≈ 1.2×10−10 m/s² they peel upward: the free‑flowing whirlpool clogs, and pull appears with no light behind it. Your clog threshold is a measured number.
g† ≈ 1.2e-10 m/s² is measured. What's interpreted
is the story: standard cosmology reads the upturn as dark-matter halos; MOND reads the very same curve as gravity changing below
g†; Manny's model reads it as geodesic flow clogging into stagnation. The data does not yet decide between them — but any theory
must reproduce this curve. The side panel shows the engine relaxation-labeling the real galaxies into free-flow / transitional /
clogged regimes — HRL on real data.
← rotation curves · The Four Poles · Genesis · data: SPARC / McGaugh et al. 2016