The thing is that this has always been Apple's design decision - the OS marks very clear distinctions between applications (as described here in another Gruber

The thing is that this has always been Apple's design decision - the OS marks very clear distinctions between applications (as described here in another Gruber piece about the OSX - and MacOS - window manager http://daringfireball.net/2003/05/the_problems_with_clickthrough http://daringfireball.net/2003/05/the_problems_with_clickthr...) The difference being the Mac allowed you to follow the same unix style philosophy through pervasive scripting, which you can't do on iOS. EDIT: typos