Galaxies across hundreds of megaparsecs stream toward the Centaurus-Norma region, yet counting and weighing the structures there leaves visible matter plus standard dark matter short of the mass the flow demands (Kashlinsky 2010; Feldman 2010). The basin pulls harder than its inventory allows.
The model requires the velocity field to be sourced by local gravitational attraction toward mass that galaxies trace. A basin whose pull exceeds its census forces either dark matter concentrated where no galaxies mark it or coordinated systematics across independent surveys, because the framework has no other contributor to large-scale motion.
SCT closes the accounting with a term ΛCDM does not carry. The effective potential is Φ_eff = Φ_local + Φ_mesh (P50): the visible matter plus the constructive interference of comoving sources through the parent hierarchy. In the virialized cores of the Attractor's clusters the coherent amplification runs to the parameter-free fixed point A* = 5.970 = 1/f_b, derived with zero free parameters in Paper 13, From Chaos to Coherent Gravity, so the basin's gravitating mass exceeds its visible census by construction, not by hidden particles. The mesh term is strongest exactly where the local inventory is weakest (P52), which is why the deficit looks worst at the basin scale rather than inside individual clusters.
The basin's location is the second half of the answer: massive convergence regions sit where deposited filaments intersect (P34), so the Attractor is a cascade node, a place the collision geometry made heavy rather than a statistical accident hierarchical growth must engineer. Part of the streaming toward it is not attraction at all but our patch's inherited frame velocity (P63), the same memory of the collision that carries the bulk-flow excess (recid 87); the Attractor sits in the direction the kinematics and the node geometry jointly select. The superposition formalism is developed in Paper 6, From Chaos to Cosmic Collisions, with the expansion-side context in Paper 7, From Chaos To Cosmic Expansion.
The keystone is P54: no dark matter particle, no untraced exotic concentration to apologize for. The missing mass was never matter; it is the coherence of the matter already counted.
Euclid, DESI, and Zone-of-Avoidance mass reconstructions carry the kill: if the basin's dynamical mass closes with visible matter plus standard NFW-distributed dark matter at the few-percent level, with no excess matching the coherent-mesh amplification toward A* = 5.970 in the virialized cores, the M6 reading is refuted. SCT requires the dynamical-to-visible ratio to track the coherence structure of the basin, not the particle-halo prescription.