The CMB low-multipole modes (l = 2 quadrupole, l = 3 octupole, l = 4) show statistically improbable phase correlations with each other, with the dipole, and with our local motion through the CMB rest frame (Copi 2015; Wehus 2016). They are also approximately aligned with the so-called Axis of Evil. In a statistically isotropic universe with random inflation-sourced quantum perturbations, these connections should not exist.
The standard model assumes inflation produces independent random-phase quantum fluctuations at every scale. Large-angle modes should therefore be statistically independent of each other and of any local direction. Persistent phase correlations across WMAP and Planck have nowhere to go in the model except as statistical flukes or unaccounted systematic errors.
SCT replaces the hot-dense-center with a superluminal collision and the thermalized debris field that became our visible universe. From this single change, the largest angular scales of the CMB carry the geometric fingerprint of the original collision. The primary collision deposited an angular momentum vector J = μ(b × v_rel) into our patch (P22, P31, P32), defining a privileged spatial axis. Low-l multipoles share this axis because they share a common physical origin in one collision event, not in 10⁷ independent quantum fluctuations.
The cascade-stream filament network (P34, P36) provides the structural medium that propagates the axis to all CMB multipoles simultaneously. Phase correlations between l = 2, l = 3, and l = 4 are therefore the predicted signature of M10 collision-axis imprinting (P41, P43, P64). The same axis is predicted to align with the CMB dipole (which is roughly perpendicular to J = b × v_rel because v_frame is parallel to b), with the radio dipole, and with the cosmic-web J-coherence axis from quasar polarization or VLBI jet alignment surveys.
The same M10 mechanism produces the Axis of Evil quadrupole-octupole alignment, the hemispherical CMB power asymmetry, the Cold Spot location, the parity-odd preference, and the directional cosmological-parameter variations seen at ~3σ by Migkas et al. 2021. Five anomalies share one common axis because they all trace back to one collision geometry. There is no need to attribute these to statistical flukes that happened to occur five times in a row.
If polarization measurements (Simons Observatory, CMB-S4) show that the four anomaly axes (Axis-of-Evil quadrupole-octupole, hemispherical asymmetry, parity-odd preference, dipole) are mutually inconsistent at greater than 3σ (do not share a common geometric direction), the M10 common-collision-axis explanation is refuted. Equivalently, if dedicated cross-correlation of the Hutsemekers quasar polarization axis with the CMB dipole finds them aligned (rather than perpendicular), the geometric prediction P64 fails.