The Milky Way's brightest dwarfs orbit in a thin polar plane with shared orbital poles, the Vast Polar Structure (Pawlowski 2015), a configuration arising in under 0.5 percent of simulated analogs, and the ensemble of six confirmed co-rotating planes drives the joint ΛCDM probability toward 2 × 10⁻¹⁴ (Kroupa 2024). Stochastic accretion does not draw planes.
Satellites in the model arrive one by one from quasi-random infall onto a triaxial halo, so their orbits cannot remember a common origin; coherence must be coincidence. Six coincidences at sub-percent each is the cost of insisting that satellites and host assembled independently, and the Milky Way-specific transient-alignment defense does not transfer to the ensemble.
SCT makes host and satellites relatives rather than strangers. The Milky Way and its dwarfs condensed from the same collision debris field, and every fragment of that field inherited the same deposited angular momentum vector J = μ(b × v_rel) (P31). Co-planarity and co-rotation are then two expressions of one initial condition: the satellites orbit in a shared plane with shared poles because they share the J their common origin stamped on them, conserved since (P32). What ΛCDM must price as six independent miracles, SCT prices as the default outcome, which is why the registered prediction is blunt: co-rotating planes should appear around essentially every adequately sampled host, at the near-100 percent rate the confirmed systems already suggest.
The registered scaling tests sharpen the claim beyond existence: plane thickness should scale with host mass, satellite plane normals of neighboring hosts should correlate within a few megaparsecs, and orbital poles should stand statistically perpendicular to the nearest cosmic filament, all because the same deposited geometry organizes every tier (P34). The debris-field formalism is in Paper 6, From Chaos to Cosmic Collisions, with the inheritance architecture in Paper 5, From Chaos To Corotating Hierarchies. The same vector carries the M31 plane (recid 131), filament rotation (recid 83), and the cluster spin scaling.
Keystone economy: P31 stamps the field, P32 preserves the stamp. The plane is not fragile fine-tuning; it is conservation law wearing dwarfs.
The registered kill is frequency: an LSST-era census of 20 or more adequately sampled hosts finding co-rotation at rates comparable to the ΛCDM expectation near 0.5 percent, rather than the predicted near-universality, refutes the shared-debris origin. The scaling tests cut independently: no plane-thickness-to-host-mass relation, no neighbor-normal correlation below 5 Mpc, and no pole-filament perpendicularity across large samples would dismantle the deposited-geometry reading even if individual planes persist.