Void demographics (sizes, shapes, abundance of cosmic voids) show tensions with ΛCDM simulations. Surveys find more large nearly empty voids with sharper edges and stronger environmental dependence than standard Gaussian initial conditions and dark-matter-only simulations produce without fine-tuning feedback or bias prescriptions (Tavasoli 2013; Sutter 2014; Ryden 1995; Platen 2007). The void abundance excess is roughly a factor of 5 above ΛCDM expectations.
The standard model assumes voids form from gradual evacuation of underdense regions in a nearly Gaussian initial field. Real voids being larger, emptier, or more numerous than simulations produce demands tuning of feedback, bias, or initial conditions, none of which is parsimonious within minimal ΛCDM.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field. From this single change, voids are inevitable inter-filament regions of the cascade-deposited cosmic web (P22, P34), not rare statistical tails. The cascade impact-parameter distribution P(b) ∝ b combined with head-on cascade collisions producing filaments (P33) produces a foamy cosmic-web morphology where voids occupy the natural geometric gaps between cascade-stream filaments.
The KBC supervoid at our location (P19) is one example of this population; the Eridanus, Local, and other supervoids are additional examples. Predicted abundance is roughly 5 to 10 KBC-amplitude supervoids per observable patch, with size distribution scaling N(R) ∝ R^(−1.4 to −1.6) from the cascade impact-parameter distribution. The factor-of-5 excess over ΛCDM Gaussian-tail expectations is naturally accommodated because in SCT large voids are typical inter-filament gaps rather than rare statistical fluctuations.
Mesh dissipation gives enhanced Λ_eff in voids (P14, P15, P16, P17), making them deeper than the Gaussian-initial-condition prediction. Sharper void edges (recid 96) come from cascade-stream filament boundaries (P33: W ∝ M_min¹⁄³) rather than from gradual gravitational evacuation. The same M4 framework that produces the KBC supervoid (recid 86), Eridanus supervoid (recid 89), and the cosmic-web morphology produces the void-abundance demographics. There is no need for tuned feedback or modified initial conditions.
If precision DESI + Euclid + SKA void-abundance census finds the size function consistent with ΛCDM Gaussian-tail predictions at the 1% level (no factor-of-5 excess of large supervoids, no N(R) ∝ R^(−1.4 to −1.6) cascade signature), the M4 cascade-stream void-origin explanation is refuted. The signature SCT prediction is roughly 5 to 10 KBC-amplitude supervoids per observable patch with the cascade-derived size distribution.