Tier 3: Major Experiments

Untested — 7 Tests, $1M–$10M

These experiments require dedicated facilities, significant funding, and multi-year timelines. They test the deepest predictions — the ones that would, if confirmed, represent genuinely new physics.

Protocol status (2026-09-14): Any experiment, in any tier, whose outcome depends on measuring C, γ, Ncorr or an MRH boundary has no operational measurement protocol yet. It is unrunnable as stated. On this page that covers TEST-16, TEST-17 and TEST-19. The cards below carry the current verdict where one exists elsewhere on the site. See the Test Roadmap →

TEST-15: GW Speed–DM Column Correlation

$1M–$5M

LIGO O4/O5 + multi-messenger follow-up  •  3–5 years

Prediction: Gravitational wave arrival time correlates with dark matter column density along line of sight

Kill: No correlation at 10⁻¹⁶ level across 50+ multi-messenger events (archive registration; sample needed for a 3σ detection stated there as 20–50 events). This card read "20+" with no σ until 2026-09-19 — a weaker criterion than the one registered, undisclosed. Reachability: the best existing bound is 10⁻¹⁵, so the criterion cannot fire on any current instrument

Current verdict: Unreachable / monitoring-only. The kill criterion (a null at 10⁻¹⁶) sits an order of magnitude below the best bound ever achieved (GW170817, |Δv/v| ≲ 10⁻¹⁵), so it can never fire. The framework predicts no positive signal, so GW170817 was passed vacuously. See Falsifiability and Decisive Tests. (corrected 2026-09-14, explorer finding 2026-09-12)

TEST-16: Controlled Decoherence Cascade

$2M–$5M

Quantum optics lab with precision environment control  •  2–3 years

Prediction: Decoherence shows discrete steps at MRH boundaries, not continuous decay

Kill: Decoherence is perfectly smooth at all measured timescales

Current verdict: Unrunnable as stated. The MRH boundary is under-determined: where it falls depends on a choice the framework never states, so there is no boundary to look for steps at. See MRH. (corrected 2026-09-14, explorer finding 2026-09-12)

TEST-17: Galaxy Cluster γ Mapping

$1M–$3M

X-ray + optical survey telescopes  •  2–4 years

Prediction: Cluster-scale γ shows characteristic profile: γ ≈ 2 at outskirts, γ < 1 in ICM cores

Kill: No radial γ gradient in cluster profiles

Current verdict: Closed upstream. Reading a γ(r) profile off cluster data needs a bridge from C(ρ) to apparent mass. All four bridges tried on Coma failed (2026-05-28): two overshoot by 10⁴, one collapses to Newtonian, and one is capped at ≤2 against an observed 4.6. See Cluster Scale. (corrected 2026-09-14, explorer finding 2026-09-12)

TEST-18: Superconductor η Optimization

$500K–$2M

Materials science lab + cryogenics  •  2 years

Prediction: New materials with optimized η (pair-breaking efficiency) show enhanced T_c

Kill: η optimization produces no T_c improvement over random search

Distinguishing power: MODERATE — tests whether η is useful as design parameter

TEST-19: Multi-Scale Neural Coherence

$3M–$8M

Neuropixels + high-density EEG + fMRI  •  3–5 years

Prediction: Neural coherence shows scale-free structure with phase transition at C ≈ 0.50

Kill: Neural coherence shows no scale-free structure; threshold varies >50% across subjects

Current verdict: Unrunnable as stated. Predictions keyed to C ≈ 0.50 inherit the untestable-as-stated verdict, because no measurement maps to C. See Consciousness Threshold. (corrected 2026-09-14, explorer finding 2026-09-12)

TEST-20: Void Galaxy Rotation Curves

not fundable as proposed

Radio telescope time (resolved HI rotation curves in voids); proposed at $1M–$3M, 2–3 years  •  MOND+EFE branch measured 2021

Prediction: Void galaxies show higher DM fraction than cluster galaxies at same M_bar

Kill: DM fraction independent of cosmic environment

Current verdict: Self-eliminating-or-tie, and already executed by others. The two frameworks do not predict the same thing. On the SPARC mass models, at the environmental contrast SPARC actually spans, the density-keyed framework predicts a void-to-overdense change in DM fraction of ΔfDM ≈ 1.3×10⁻⁵ (low-g median, best case over knees and γ). MOND+EFE predicts 3.2×10⁻³, about 255× larger. Under the framework's acceleration keying C(a), the prediction is identically zero, since gbar is held fixed. A 3σ stacked detection of the framework's signal would need ~1.4×10⁸ resolved HI rotation curves, against ~2.1×10³ for MOND+EFE. No outcome selects the framework, the same class as TEST-02. The measurement has also been made: Chae et al. 2021 (arXiv:2109.04745) located the SPARC galaxies in the cosmic web and found the EFE at >4σ. That detection is contested: Paranjape & Sheth 2022 (MNRAS 517, 130) show an EFE-like signal is generically expected in ΛCDM; Freundlich et al. 2022 (A&A 658, A26) find no EFE in Coma-cluster ultra-diffuse galaxies, a different sample; a 2025 re-analysis (Sargent et al., arXiv:2511.03839) calls it inconclusive. This is not a seventh refutation, and the count stays at 6. See TEST-05 for the lever-magnitude adjudication. (corrected 2026-09-14, explorer finding 2026-09-12)

TEST-21: BAO Fine Structure with Euclid

$2M–$5M (analysis grant)

Euclid mission data  •  3–5 years

Prediction: BAO peak shows fine structure (sub-peaks) from coherence interference

Kill: BAO peak is smooth Gaussian to 10⁻⁵ level in Euclid data

Distinguishing power: EXPLORATORY — no derived amplitude exists. Without a predicted sub-peak amplitude, any non-detection is consistent with "amplitude too small." Demote to exploratory until amplitude is derived. (Same standard applied to TEST-07 — 500 Mpc oscillation demoted for missing amplitude.)

Tier 4: Frontier →← Tier 2

Prerequisites

Understanding these concepts first will help:

Test Roadmap26 tests by tier (24 in the original registry + 2 added later)

Related Concepts

Tier 2: Pilot Experiments4 tests, $50K–$200K eachTier 4: Frontier3 tests at the edge of current technology