Lensed quasars yield angular-diameter distances geometrically: image configuration plus delays plus lens kinematics, no ladder anywhere. The early sample's distances imply H₀ in the low 70s at per-lens precisions of 10 to 20 percent, with the mass-sheet and kinematic degeneracies entering openly as model ingredients, and the line-of-sight convergence, each lens's environment, sitting explicitly in the inference where other methods bury it.
The model processes lens distances toward one number: per-system environmental convergence is a nuisance to marginalize, scatter between lenses is statistics, and the method's verdict is whatever its average says about the global H₀. The per-sightline structure the technique uniquely resolves is exactly what the one-number framework discards.
SCT values this method for what the standard framing wastes: it measures D_A system by system, along identified sightlines, with environment as an explicit term, which makes it the designed instrument for an inhomogeneous Λ_eff field (P17, P19). The framework's registered expectations transfer directly: lens distances should scatter with line-of-sight environment beyond the modeling errors, the implied H₀ should sit high for systems behind underdense corridors and relax toward the global value behind overdense ones, and the external-convergence term should absorb the mesh's contribution (P51) just as it does in the time-delay program, real physics inside what the model calls a nuisance parameter. The double-source-plane ratios add the shape test: distance ratios across two redshifts probe the Λ_eff evolution that displaces the D_A turnover and the DESI w(z) fits.
At the lens-model level the coherence layer enters once more: lens galaxy masses carry the amplification structure A(r) (P50, P52), so kinematic-plus-lensing mass profiles fit with NFW-class templates inherit the same template bias documented across the cluster entries, one more place where the registered profile family meets data built to test it. Foundations in Paper 1 (P17, P19) with the mesh-lensing structure of Paper 6, From Chaos to Cosmic Collisions.
No new premises: the standing field and the standing profile, measured by the one distance method that keeps its environments visible.
The population test arrives with the samples: hundreds of Rubin-Euclid lenses with ELT kinematics finding lens distances statistically independent of line-of-sight environment, scatter at pure modeling levels, H₀ uniform across sightline classes, would remove the field's signature in the cleanest per-sightline data available. The shape side cuts too: double-source-plane ratios tracking constant-Λ evolution exactly would constrain the Λ_eff dynamics at the redshifts where the quasar Hubble diagram claims they show.