It's not confusing. It's unnecessary
and difficult to navigate with a mouse.
> In the future, all of Microsoft’s Universal Windows apps will also run in a window.
What does this mean? Are you telling me that every program I run in Windows 8 is full screen? That's the dumbest thing I've ever heard. The OS is called WINDOWS.
Windows Key -> "calc" -> Enter
Viola, the classic Windows calculator.
But to me, thats an entirely different concern. It's frustrating that most users, of any platform, will simply scream and give up whenever there's a change in their routine.