Cold collisionless dark matter generically builds cuspy 1/r halo centers; dwarf and low-surface-brightness galaxies, the cleanest dark-matter laboratories, consistently show flat cores instead, a 5σ discrepancy (Flores and Primack 1994; de Blok 2010; Bullock and Boylan-Kolchin 2017). The simplest prediction of the particle picture fails where it should work best.
The cusp follows inevitably from collisionless particles plus gravity, so the model must un-build it with baryonic feedback, in galaxies with barely enough stars to drive it, tuned to produce the observed core diversity without breaking neighboring constraints. The repair costs the simplicity that justified the particle in the first place.
SCT never builds the cusp because there is nothing to relax into one. The dwarf's gravitating mass is its baryons plus the coherent mesh contribution: Φ_eff = Φ_local + Φ_mesh (P50, P51), the constructive superposition of comoving sources through the parent hierarchy. The mesh term is intrinsically smooth and slowly varying, strongest in the outskirts where local gravity is weakest and gentle in the center (P52), so the effective density profile a rotation curve reads is cored by construction. The observed core is not damage done to a cusp; it is the undisturbed shape of a coherent field, with no feedback choreography required in galaxies that could never have powered it.
The core diversity rides on the same dial as rotation-curve diversity generally (recid 112): the amplification A(N, σ_v, R) tracks each system's coherence state through C = exp[-σ_v²/v_cross²], running toward the parameter-free fixed point A* = 5.970 = 1/f_b in quiet virialized systems and toward unity in kinematically stirred ones, the limit the dark-matter-deficient diffuse galaxies already confirm. The Radial Acceleration Relation stays tight throughout because the mesh amplifies the baryons themselves. The formalism is in Paper 13, From Chaos to Coherent Gravity, with the superposition mechanics in Paper 6, From Chaos to Cosmic Collisions.
Keystone economy: P54 removes the particle and with it the prediction that fails; P50 and P52 supply the cored profile that succeeds. Three decades of repair work were aimed at an artifact.
Two registered kills. A confirmed laboratory or astrophysical detection of a dark matter particle, LZ, XENONnT, collider production, or definitive indirect signature, refutes the no-particle keystone outright. Within the sector: WALLABY and SKA dwarf rotation curves confirmed to follow NFW cusps after rigorous baryonic accounting across a complete sample, or core properties found uncorrelated with the coherence diagnostic σ_v/v_bulk, would break the coherent-mesh profile reading.