"The" window? Which one? The one in the room or the one in the room where most moisture is produced. The one on the cold north side or on on the warm south side?Or just crack the window a tiny bit and see if the simple solution works first
Does that let the damp inside air out or the damp outside air in?
The thing is, there is no one solution, as it's a combination of things and a balance of those things. Occupants need to be aware of how they are producing moisture which ends up in the corners of rooms in places like ceilings and the various steps they need to take - and its not just "open the window a bit".