Let's say we have two rooms in a mansion that have the same temperature. One of these rooms contains an indoor swimming pool. If the temperature outside cools down, will the room with the swimming pool "steam up"? Or will it rather be the other room without pool that does that? I'm thinking the room with the swimming pool will rather do that, because that room has a high relative humidity and then it will condense on it's windows when they are cool. How would you reason about this?