exp015_router_v2 — the corrected router test: address-as-key FALSIFIED
(CANDIDATE, s0 — the window's final training run)
Fixes applied from exp014's instrument findings: the address enters as 32 slots → shared 128→4 projection → per-slot dense signed aleph coefficients → MEAN composition (low-D before addressing — the text line's cure for the high-D flattening disease); null = REPEATED KEY (constant address for all prompts — isolates text-specific routing from state-driven variance); plus a matched-vs-mismatched key val delta (the correctness gauge v1 lacked).
Results (results.json, flow trunk, fused cache):
| arm | val | usage-var (real) | usage-var (repeated null) | match advantage |
|---|---|---|---|---|
| state_sigma (control) | 0.57310 | 1.36e-02 | — | — |
| mhat_addr (v2) | 0.57491 | 1.13e-02 | 1.13e-02 | −0.0 |
Verdict. Routing excess over the constant-key null: 2.5e-06 — zero. Matched and mismatched address keys produce identical val. With correct geometry AND correct instruments, the frozen text address contributes no prompt-specific routing on this substrate at this scale; all per-prompt usage structure is state-driven (consistent with exp014's finding that the hidden-state key already routes by prompt). Two-experiment closure of the dispatch-key form of the router-solidifier idea; the open form is the full TE+AMOE joint-training collective (docket), where the text encoder learns THROUGH the diffusion loss rather than entering as a frozen key.
Caveats. s0; one substrate (lune flow), one scale (A=4); the fused captions are stylistically homogeneous (fashion photography) — a low-text-diversity regime; a multi-domain caption mixture is the one remaining escape hatch for the frozen-key form.
SEED-1 (2026-07-19, results_s1.json) — FALSIFICATION 2-SEED
uvar_real == repeated-key null to 3 significant figures again (9.66e-03 both); routing excess −4.3e-06; match advantage 2e-06. Both seeds, correct instruments: the frozen text address contributes zero prompt-specific routing as a dispatch key on this substrate/scale. The dispatch-key form is closed; TE+AMOE joint training is the open form. (The campaign's final run.)