# 05 — Failure Conditions

UNNS-H Mode should be treated as a research hypothesis, not a decorative analogy.

## The approach is weakened if:

1. `m_edge(t)` does not separate L-mode, dithering, H-mode, and H-L windows.
2. Transition labels are explained equally well by one raw variable such as heating power alone.
3. Pedestal or edge-gradient variables add no information to transition classification.
4. ELM events show no measurable boundary-overload signature.
5. The same computed features do not transfer even weakly across devices.
6. UNNS features cannot reproduce known H-mode facts such as the edge barrier, pedestal formation, or confinement improvement.
7. The proposed quantities are too dependent on unavailable diagnostics to be practically tested.

## The approach is strengthened if:

1. `m_edge(t)` rises sharply at L-H transition.
2. Dithering phases oscillate near `m_edge(t) ≈ 0`.
3. Stable H-mode holds positive `m_edge(t)`.
4. Pre-ELM intervals show rising `B_overload(t)`.
5. H-L transitions coincide with loss of positive edge margin.
6. The same feature logic works across TCV, MAST, and later DIII-D/JET/ASDEX-style cases.
