Two symptoms, one inference step
Both sectors are inferred within a common large-scale modelling frame. That shared step is therefore an appropriate object of audit.
Prephysics Research Programme
Dark Sector
Two symptoms, one possible applicability failure.
Diagnostic focus
Dark matter and dark energy may be coupled symptoms of a shared inference architecture rather than wholly independent discoveries.
The diagnostic thesis
Measured discrepancies remain real. The open question is whether the substance interpretation is uniquely licensed across all relevant regimes.
What remains in scope
Rotation curves, lensing, expansion, structure formation, the CMB and the Bullet Cluster remain essential tests, including cases that resist the thesis.
In-depth work
The cosmological argument is developed in the scientific and public-facing book treatments.