The Cold Spot is a ringed, 5-degree-radius region running about 70 µK below the CMB mean, a roughly 3σ feature against Gaussian expectations. The confirmed Eridanus supervoid in front of it (1.8 billion light-years, 20 percent underdense) supplies only -10 to -20 µK through the integrated Sachs-Wolfe effect, a fifth of the signal. ΛCDM is left choosing between a double coincidence, modified gravity, or an exotic texture.
The model assumes every primordial temperature feature is a Gaussian quantum fluctuation, statistically isotropic by construction, with late-time structure adding only small ISW corrections. A localized, ringed, non-Gaussian cold feature has no place in that inventory, so the model must either dilute it into the Gaussian tail or pin it entirely on a foreground void that measurably cannot carry it.
SCT replaces the hot-dense-center with a superluminal collision whose thermalization was multi-phase rather than perfectly uniform (P44): different regions of the overlap volume received different energy depositions set by the collision geometry. A region at the grazing edge of the deposition pattern received less heating, and the thermodynamic state it carried into recombination (P29, P30) reads today as a colder patch of sky. The Cold Spot is a thermalization fingerprint, not a fluctuation to be explained away.
The same under-energized region carries lower density, and lower density then evolves over 13.8 billion years into exactly what sits in front of the Cold Spot today: a supervoid. In SCT the spot and the Eridanus void are siblings, two effects of one cause, which inverts the ΛCDM logic. The void was never supposed to produce the spot, so its measured ISW shortfall is not a failure; the predicted relationship is correlation in position, not causation in temperature, and that correlation is observed. The ring profile follows naturally as the boundary between deposition zones, where ΛCDM's Gaussian field has no reason to draw circles.
This is the same collision-geometry heterogeneity that produces the hemispherical power asymmetry and the aligned low multipoles: one deposition pattern read in several statistics. There is no need to invoke cosmic textures, modified gravity amplification of the ISW effect, or a one-in-many-thousands double accident.
The registered kill: high-sensitivity polarization maps (Simons Observatory, CMB-S4, LiteBIRD) finding no correlated polarization anomaly at the Cold Spot location would remove the formation-epoch signature SCT requires; a primordial Gaussian fluctuation and a collision deposit predict different polarization companions. Statistically, future void catalogs showing cold-spot-scale decrements uncorrelated with supervoid positions would break the sibling prediction.