Windows RT has a very limited implementation of the traditional Windows Desktop, which runs just one program: a preinstalled copy of Microsoft Office Home & Student 2013 RT. That's it: You can't install any other apps there. This makes the Desktop feels like a weird appendage, one that somehow managed to survive Windows' evolutionary upheaval. And that's pretty much the case. Desktop will stick around until Microsoft ships a Windows 8-style (i.e. Metro/Modern UI) version of Office. When will that happen? Perhaps when the next version of Office arrives, which could be far off.