Like others have said, it's more about what the icon represents. A window (maybe a document) or an application. I prefer the application metaphor more than the

Like others have said, it's more about what the icon represents. A window (maybe a document) or an application. I prefer the application metaphor more than the window metaphor. I've come to like this since I don't always need to see all my windows to access a running application. That said, there is plenty of other questioning that can arise like, does one close the application when all windows are gone? Tricky.