The local Hubble flow is implausibly quiet: peculiar-velocity dispersion of 30 to 70 km/s within a few Mpc, with HST samples near 30 km/s, while CDM simulations of neighborhoods like ours predict dispersions two to several times larger. The dark energy smoothing proposed as a rescue fails in constrained simulations of the actual local volume. The best-measured region of the universe is the one the model cannot reproduce.
Hierarchical assembly builds the local volume from mergers and infall with no memory beyond gravity, so nearby galaxies should retain the kinematic noise of their separate histories. The model has no mechanism that hands neighboring galaxies a shared, quiet motion; coldness can only be bought as an unlikely statistical accident of our position.
SCT replaces the hot-dense-center with a superluminal collision whose debris carries shared bulk motion: structures condensing from the same deposition stream inherit a common velocity and a common angular momentum from the collision geometry (P31, P32), organizing into comoving frames whose members move together by construction (P8). The local volume's galaxies are siblings from one debris field, not strangers accumulated by mergers, so their relative velocities are the small residuals around an inherited common motion rather than the accumulated noise of independent histories. The flow is cold because coherence is the initial condition.
Hierarchical time transmission (P10) keeps the inherited frame intact as it expands, and a secondary modulation layers on top: within the frame, the dynamical Λ_eff (P17, P19) smoothly matches interior motion to the parent-frame expansion at the boundary, the role dark energy was conscripted for and could not perform from a constant. The same inheritance that quiets the local flow produces the coherent bulk flows at larger scales: one mechanism, read as coldness within frames and as excess streaming between them, where ΛCDM fails in both directions at once.
This is the same debris-field coherence behind satellite-plane co-rotation and spin-filament alignment. There is no need to invoke dark energy smoothing the simulations refute, or a statistical accident in every direction we look.
The registered kill: the coherence is frame-structured, so redshift scatter must track shared parent-frame membership. Source-observer pairs sharing a common group or supercluster parent must show systematically lower velocity scatter than pairs whose lowest common parent is the Hubble flow; DESI and Euclid cross-correlation of redshift residuals with group catalogs finding no such membership dependence falsifies the inherited-frame account. Locally, wide-field surveys finding neighborhoods with our density and history but hot flows at ΛCDM levels would show our coldness is accident, not inheritance.