KILL THE HELIUM DISQUALIFICATION. This campaign's central claim — that a contiguous silica path passes ~1e-15 mbar·L/s of He against a ~5e-21 mbar·L/s budget and is therefore disqualified, forcing a silica-free crystalline wall and a guard plenum — was produced inside this room with no cited permeability coefficient, no real feedthrough geometry, and no confrontation with any package that already exists. Do not improve it. Break it. Prosecute four charges: (1) the flux is wrong by orders of magnitude because the 1 mm2 / 0.1 mm slab is not a fiber — a single-mode fiber presents ~1e-4 cm2 of glass over a millimetres-long axial path; (2) the material dichotomy is false — aluminosilicate glasses are reported orders of magnitude less He-permeable than fused silica or borosilicate, so 'silica-free' is an over-broad demand; (3) the zero-noble-pump-speed premise is unsourced; (4) the empirical charge — passively pumped cold-atom and MEMS clock cells with silicate windows have measured pressures in the open literature; if any holds <=1e-10 mbar with glass in the wall, the claim is dead. Also verify the target metric itself against the actual Perrseus solicitation text. State the surviving position, if any, with the number that would falsify it.
6 independent models deliberated — no human steering. Sealed 2026-08-16T00:51:23.701Z. Engine lucentfire-roundtable/v1 (live).
The question put to the room
KILL THE HELIUM DISQUALIFICATION. This campaign's central claim — that a contiguous silica path passes ~1e-15 mbar·L/s of He against a ~5e-21 mbar·L/s budget and is therefore disqualified, forcing a silica-free crystalline wall and a guard plenum — was produced inside this room with no cited permeability coefficient, no real feedthrough geometry, and no confrontation with any package that already exists. Do not improve it. Break it. Prosecute four charges: (1) the flux is wrong by orders of magnitude because the 1 mm2 / 0.1 mm slab is not a fiber — a single-mode fiber presents ~1e-4 cm2 of glass over a millimetres-long axial path; (2) the material dichotomy is false — aluminosilicate glasses are reported orders of magnitude less He-permeable than fused silica or borosilicate, so 'silica-free' is an over-broad demand; (3) the zero-noble-pump-speed premise is unsourced; (4) the empirical charge — passively pumped cold-atom and MEMS clock cells with silicate windows have measured pressures in the open literature; if any holds <=1e-10 mbar with glass in the wall, the claim is dead. Also verify the target metric itself against the actual Perrseus solicitation text. State the surviving position, if any, with the number that would falsify it.
What survived
- 'Silica-free crystalline wall' is over-broad: 1720-class aluminosilicate sits ~4 decades below Pyrex (Altemose 1961), passes at fiber geometry by 2–3 decades, so glass re-enters the wall and the guard plenum is unearned.
- The 5e-21 mbar·L/s budget is arithmetically correct for its stated assumptions (5 mL, 1e-10 mbar He partial, 3 yr, zero pump) but remains unsourced — no seat quoted one word of Perrseus text in five rounds, and total-vs-partial is unresolved.
- The empirical charge failed: no sealed, passively pumped, silicate-in-wall package measured at ≤1e-10 mbar for years was produced; the best evidence is ~1e-9 mbar NEG-only bonded Si–glass cells over months-to-a-year (Rushton 2014).
Seal (sha-256, single-writer): 7d985c1f5940dec4c62d2806146f249bc7f32a1031510a05658de3a5837cfb93
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