The Eridanus supervoid spans 250 to 300 Mly, deep enough to be statistically improbable under Gaussian initial conditions, and it sits in the direction of the CMB Cold Spot while its ΛCDM ISW imprint is several times too shallow to produce the observed deficit (Granett 2010; Szapudi 2015; Mackenzie 2017). Two improbable objects, aligned by official coincidence.
The model makes voids rare Gaussian tails and fixes their ISW imprint by one uniform potential-decay rate. The supervoid is therefore unlikely to exist, and having existed, is forbidden from explaining the Cold Spot it points at. The alignment must be dismissed as chance because the connecting mechanism is pinned too weak by construction.
SCT removes both improbabilities with the machinery already running. The existence half is architecture: voids are the inevitable inter-filament gaps of the cascade-deposited web (P33, P34), with large supervoids common geometric elements rather than exponentially suppressed tails, the registered face of the roughly fivefold supervoid excess over simulation predictions. An Eridanus-scale underdensity in our neighborhood is unremarkable in a deposited web, exactly as the KBC void is (recid 86).
The voice half is M5: inside deep underdensities Λ_eff runs locally enhanced (P17, P19), so void potentials decay faster than the constant-Λ rate the standard ISW calculation assumes. The same environment-dependent decay that makes the sky-averaged ISW signal run low while stacked supervoids run strong (recid 67, the Granett pattern) amplifies this void's imprint specifically, closing the gap between what the supervoid can stamp on the CMB and what the Cold Spot shows. The cold-spot-to-supervoid correlation is a registered SCT cross-check rather than a coincidence to be explained away, with the collision-phase heating deficit of the Cold Spot itself (P29, P30) layered beneath as the primordial component. The web architecture is in Paper 1, From Chaos to Convergent Foundations; the Λ_eff machinery in Paper 7, From Chaos To Cosmic Expansion.
Keystone economy: P34 makes the void common, P19 makes it loud. The alignment stops being luck and becomes the mechanism showing through.
Two registered kills. DESI and Euclid void censuses finding the supervoid size function consistent with Gaussian-tail predictions, no large-void excess, refutes the architectural half. Void-stacked ISW measurements finding the Eridanus-class imprint consistent with the standard ΛCDM decay rate, no enhancement, removes the M5 amplification and returns the Cold Spot alignment to coincidence, breaking the SCT reading of the pair.