The reason is because the way it is now, in tablet, split screen sucks. You can't tell me this is good That just looks horrible. I can see half the content, the app is squished to the side and it looks like a real mess. This wouldn't make me any more productive. Actually it would just get in the way and be annoying. Apple can't ship and iPad to do that. It is terrible. When Apple figures out some really effective way to work with more than one thing on the screen at the same time then they will give that to you. it is better than shipping that mess above. As it stands, with 2GB of ram, think of it as having full screen apps on OSX and you're just swiping between them. And for now that's as good as it gets for a 10" tablet.