>"Ideally, what I would like (and I think most people would like) is something of the form factor of a MacBook Air (thin and light), that has a detachable touch

>"Ideally, what I would like (and I think most people would like) is something of the form factor of a MacBook Air (thin and light), that has a detachable touch-screen that can run apps written for iOS or Android, and when the screen is connected to the main body, acts like a fully-functioning laptop." To make the screen detachable you would need to have everything in the screen section which, as others already pointed out, makes for a awkward weight distribution. Years ago I've seen a laptop with a touch screen where you were able to pivot the screen and close it with the display pointing up. So the laptop was closed, but you were still able to use the touch screen. A MacBook Air with where you can do that and that can run iOS Apps would in my eyes be the perfect solution.