In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Windows
If you dream that the windows in your house are closed then you will have problems, but if you are standing in front of a new window and light is entering the house then expect joy and success.